Grass Fed Collagen Protein Vanilla Flavor by Garden of Life

POSSIBLY EFFECTIVE

• Aging skin. Oral collagen peptides seem to improve skin hydration and elasticity in older adults. However, it is unclear if any improvements related to wrinkles are cosmetically important. Details: Meta-analyses of the available research, as well as multiple individual clinical studies, show that collagen peptide products, taken in doses of 372 mg to 12 grams daily for 4-12 weeks, improve skin hydration and elasticity in older adults. Studied products include Peptan-F or Peptan-P (Rousselot), Wellnex (Nitta Gelatin), Gold Collagen Active (Minerva Research Labs), VERISOL (Gelita AG), and Nippi peptide FCP-EX (Nippi/Shizuoka) (97632,100703,101597,104647,107460,112457). Pooled study results also suggest that hydrolyzed collagen sourced from fish improves skin hydration and elasticity, while collagen peptides originating from chickens seems to modestly improve skin elasticity but not hydration. Collagen peptides derived from bovine do not seem to improve skin hydration or elasticity (112457). Despite research showing improvement in skin hydration and elasticity, it is unclear if collagen peptides reduce skin wrinkles to a cosmetically significant degree, as most studies have not evaluated this outcome. In one clinical study, taking a freshwater fish-derived collagen peptide (Vinh Wellness Collagen, Vinh Hoan Corporation) 10 grams every morning reduced wrinkle count in the nasolabial region of the right side, but not the left side, of the face by 24% when compared with placebo. Collagen peptides did not improve participant-reported measures of wrinkles, elasticity, hydration, and others, when compared with placebo (104639). Another clinical study shows that taking a specific fish scale-derived collagen peptide (Wellnex, Nitta Gelatin) with either a high or low ratio of prolyl-hydroxyproline and hydroxylpropyl-glycine as 5 grams orally daily for 8 weeks modestly improves wrinkle depth and roughness, but not wrinkle volume, when compared with placebo. The product with a high ratio of dipeptides had a larger effect (97632). Also, one clinical study shows that taking a specific product containing porcine collagen type I peptides (VERISOL, Gelita AG) 2.5 grams daily for 8 weeks reduces eye wrinkle volume by 20% when compared with placebo (101648). Two similar moderate-size clinical studies in middle-aged adults with crow's feet wrinkles and dry skin show that taking specific low-molecular-weight fish-derived collagen peptide products (Geltech Co.; CPNS) at doses of 2000 mg or 1650 mg, respectively, daily for 12 weeks improves eye wrinkles, skin hydration, and elasticity when compared with placebo (110729,110730). While investigator satisfaction scores regarding wrinkle reduction were modestly improved, participant satisfaction was not improved (110729). Small clinical studies have shown contradictory findings when collagen peptides are taken in combination with other ingredients. In one clinical trial, a specific drink (Diva Luxe) providing fish collagen peptides 5.5 grams plus Chenopodium formosanum extract 1 gram daily for 8 weeks improved some measures of skin brightness and hydration, but not wrinkles and crow's feet, when compared with placebo (104646). Another small clinical study shows that taking collagen peptides 4 grams daily in combination with coenzyme Q10 50 mg, vitamin C, vitamin A, and biotin for 12 weeks reduces wrinkles and improves skin smoothness by a small amount when compared with placebo. However, there was no difference in skin elasticity or hydration (104638). A clinical study in older females shows that taking collagen peptides 9 grams in combination with zinc and vitamins A, C, and E daily for 90 days increases stratum corneum water content and skin viscoelasticity when compared with placebo. However, it is unclear if the improvement from baseline differed between groups. Small improvements in dermal echogenicity, wrinkles, or skin pores were noted in some facial regions, but the lack of statistical comparison to placebo limits the validity of these findings (107464). Some small clinical studies have shown mixed effects with low doses of collagen peptides from preliminary clinical research using BioCell Collagen (BioCell Technology, LLC) or Celergen (Laboratories-Dom) (28681,97930). It is unclear if any improvements from these studies are due to collagen peptides, other ingredients, or the combinations. Topical application of collagen peptides has been minimally evaluated. A very small observational study in older adults has found that application of a carbopol gel containing collagen peptides 1% to the periorbital area twice daily for 8 weeks is associated with increased skin hydration and elasticity and reduced transepidermal water loss, skin roughness, and wrinkles when compared with baseline (107459). The validity of these findings is limited by poor study methodology, lack of statistical comparison to baseline, and lack of a comparator group.
• Dry skin. Oral collagen peptides seem to improve skin hydration and elasticity in adults with dry skin. However, their effect on other measures of dry skin is unclear. Details: A meta-analysis of 19 clinical studies, along with several small and moderate-sized individual studies, some of which are included in the meta-analysis, show that taking collagen peptides 372 mg to 12 grams daily for 4-12 weeks improves skin hydration and elasticity when compared with placebo in healthy adults (107461,110729,110730,112457,112458). Some studies show that collagen peptides improve skin roughness (107461), decrease peeling (110729,110730), and increase stratum corneum and epidermis water content (107462) but not skin gloss (107461) or elasticity (107462). Some research shows that collagen peptides reduce transepidermal water loss (107462), while another study shows no change (107461). Subgroup analysis of the meta-analysis suggests that hydrolyzed collagen sourced from fish improves skin hydration and elasticity the most, while collagen peptides originating from chicken seem to modestly improve skin elasticity but not hydration. Collagen peptides from bovine do not seem to improve skin hydration or elasticity (112457). Studied products include FCP-Z (Nippi Co., Ltd), Geltech Co., CPNS, and GPVGPS Collagen (Daehan Chemtech) (107462,110729,110730,112458). Collagen peptides have also been evaluated in combination with other ingredients. A small clinical study in healthy adults with low skin moisture shows that drinking 30 mL of a beverage containing fish scale-derived collagen peptides 10 grams and ornithine 400 mg (FUJIFILM) daily for 8 weeks does not improve skin moisture but seems to improve skin elasticity and reduce water loss when compared with placebo (101607). Another very small clinical study in a mixed population of patients with dry skin and mild atopic dermatitis shows that twice daily application of an emollient containing collagen peptides, soluble proteoglycan, and hyaluronic acid for 4 weeks reduces itching severity from moderate at baseline to mild or almost none. Transepidermal water loss and skin hydration also improved when compared to baseline (107465). The validity of these findings is limited by the lack of a comparator group. Both of these studies are limited by their small size, and it is unclear if any improvements are due to collagen peptides, other ingredients, or the combination.

POSSIBLY INEFFECTIVE

• Muscle strength. Most research suggests that oral collagen peptides do not improve leg strength. However, they may improve hand-grip strength and fat-free mass. Details: Small clinical studies in healthy male and female athletes or non-athletes undergoing resistance or other training show that taking collagen peptides 15-30 grams daily or after training sessions for up to 15 weeks, with or without vitamin C, does not improve leg strength (i.e. squat strength, knee extension, or flexor strength) when compared with placebo (101608,104641,107457,110668,110669). Similarly, 2 very small clinical studies in healthy adults show that taking a specific oral collagen peptide product (Bodybalance, Gelita AG) 5-15 grams daily while completing a resistance training program for 14-15 weeks increases patellar tendon cross-sectional area but does not improve most measures of tendinous tissue remodeling including patellar tendon size, vastus lateralis aponeurosis size, patellar tendon mechanical properties, tendon stiffness, maximal knee extension strength, or rectus femoris muscle cross-sectional area when compared with placebo (112452,112454). However, a small clinical study with the same product in untrained females aged 18-50 years shows that taking 15 grams daily in addition to resistance training three times weekly for 12 weeks improves hand-grip strength when compared with resistance training and placebo (101608). In untrained males aged 30-60 years, taking the same dose of this collagen peptide product along with resistance training for 12 weeks improves fat-free mass by 3 kg, compared with 2 kg with resistance training and placebo. A post-hoc exploratory analysis suggests that the effects seen in males are similar to those seen with whey protein (107457).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Acne. Although there has been interest in using oral collagen peptides for acne, there is insufficient reliable information about the clinical effects of collagen peptides for this condition.
• Androgenic alopecia. Oral collagen peptides have only been evaluated in combination with other ingredients, their effect when used alone is unclear. Details: A moderate-sized clinical study in adults with androgenic alopecia or telogen effluvium shows that taking a combination product containing hydrolyzed collagen 300 mg, taurine, cysteine, methionine, iron, and selenium (GFM Oral, Cantabria Labs) daily along with conventional therapy, consisting primarily of finasteride or minoxidil, for 12 weeks improves hair loss when compared with conventional therapy alone (111636). It is unclear if this effect is due to collagen peptides, other ingredients, or the combination.
• Athletic performance. It is unclear if oral collagen peptides improve performance in most athletes. Details: In recreationally active female runners undergoing resistance and endurance training 3 times weekly, clinical research shows that taking collagen peptides 7.5 grams twice daily for 12 weeks increases running distance by approximately 1,034 meters, compared with an increase of 703 meters in those taking placebo, although there was no effect on speed (104641). A clinical study in healthy young male athletes undergoing heavy strength and power training shows that taking collagen peptides 20 grams and vitamin C 50 mg daily for 3 weeks improves squat performance and countermovement jump performance when compared with placebo. However, removal of a single outlier negated the statistical significance of most of these findings (107456). Also, it is unclear if any improvements from this study are due to collagen peptides, vitamin C, or the combination.
• Atopic dermatitis (eczema). It is unclear if oral or topical collagen peptides are beneficial for improving the severity of eczema. Details: A small clinical study in patients with atopic dermatitis shows that taking a porcine skin-derived collagen peptide with a high ratio of tripeptides with glycine-X-Y sequences, 3.9 grams daily for 12 weeks, improves symptoms and severity of eczema when compared to baseline. There was no improvement in the group taking the same dose of porcine skin-derived collagen peptide without the high ratio of tripeptides (101605). Another very small clinical study in a mixed population of patients with atopic dermatitis and dry skin shows that twice daily application of an emollient containing collagen peptides, soluble proteoglycan, and hyaluronic acid for 4 weeks reduces itching severity from moderate at baseline to mild or almost none. Transepidermal water loss and skin hydration also improved when compared to baseline (107465). It is unclear if any improvements are due to collagen peptides, the other ingredients, or the combination. Both of these studies are limited by their small size and lack of comparator groups.
• Burns. Some preliminary clinical research suggests that oral collagen peptides might reduce the time needed for burn healing. Details: In male patients with 20% to 30% body surface area burns, a small clinical trial shows that taking a collagen-based supplement providing collagen peptides (Amutiya, Qom) 36 grams daily for 4 weeks improves wound healing when compared with taking an isocaloric supplement containing the same amount of soy protein. Complete wound healing occurred in 50% and 100% of patients taking collagen for 2 and 4 weeks, respectively, compared with 7% and 40% of those taking the isocaloric product. The duration of hospital stay was not significantly different between the two groups (104642). A small clinical study in hospitalized adults with 20-45% body surface area 2nd or 3rd degree burns shows that consuming a beverage containing collagen peptides 40 grams daily for 4 weeks shortens the time to wound healing, improves scar scores, and reduces the duration of hospital stays but does not limit wound infections when compared with placebo. Adding fish oil 3 grams daily did not further improve outcomes (110667).
• Brittle nails. One small clinical study suggests that oral collagen peptides may improve nail health in people with brittle nails. Details: A small clinical study shows that taking a specific porcine type I collagen peptide product (VERISOL, Gelita AG) 2.5 grams daily for 6 months improves overall symptoms of brittle nail syndrome, increases nail growth rate by 12%, and reduces broken nail frequency by 42% when compared with baseline (101606). This study was limited by its small size and lack of a comparator group.
• Cellulite. One small clinical study suggests that oral collagen peptides may reduce cellulite. Details: In people with cellulite, a small clinical study shows that taking specific collagen peptides (VERISOL by Gelita AG) 2.5 grams daily for 6 months seems to reduce cellulite, skin waviness, and dermal density by a small amount when compared with placebo (101619).
• Cognitive function. It is unclear if oral collagen peptides are beneficial for improving memory. Details: In healthy adults, preliminary clinical research shows that taking collagen peptides 5 grams daily for 4 weeks improves some measures of memory and verbal learning when compared to baseline (104643). This study was limited by its small size and lack of a comparator group.
• Dermatoporosis. One small clinical study suggests that using oral or topical collagen peptides does not improve this condition. Details: A small clinical study in post-menopausal patients aged 70 years on average with mild dermatoporosis shows that taking collagen peptides 5 grams daily, applying a collagen peptides 2.5% serum 3 pumps nightly to each forearm, or using these in combination for 6 months does not improve skin lesions, epidermal thickness, collagen or elastin density, or patient perception of skin improvement when compared with placebo (110731). However, it is unclear if these results apply to patients with more severe dermatoporosis.
• Diabetes. Some preliminary clinical research suggests that oral collagen peptides might have a small effect on glycemic indices. Details: Preliminary clinical research in patients with type 2 diabetes shows that taking fish-derived collagen peptides 6.5 grams orally twice daily for 3 months, in addition to treatment with antidiabetes drugs, may modestly reduce levels of fasting blood glucose, glycated hemoglobin, and fasting blood insulin and may increase levels of insulin sensitivity when compared with antidiabetes drugs and placebo (101626,101627).
• Erythema. It is unclear if oral collagen peptides are beneficial for erythema. Details: A moderate-sized clinical study in adults with dry and wrinkled eye skin shows that taking low-molecular weight collagen peptides (GPVGPS Collagen, Daehan Chemtech) 2000 mg daily for 12 weeks reduces erythema index when compared with placebo (112458).
• Exercise-induced gastrointestinal (GI) symptoms. It is unclear if oral collagen peptides prevent GI symptoms due to exercise. Details: A small crossover study in moderately well-trained young adults shows that taking collagen peptides 10 grams daily for 7 days prior to rigorous treadmill exercise does not limit GI symptoms but may attenuate some markers of GI distress when compared with placebo (110665).
• Exercise-induced muscle soreness. It is unclear if oral collagen peptides prevent muscle soreness after exercise. Details: Preliminary clinical research in a small number of healthy, recreationally active adults shows that taking collagen peptides (Peptan, Rousselot BVBA, Collagen Peptides, Vital Proteins) 10-15 grams twice daily, starting 7 days prior to strenuous exercise and continuing for 2-5 days after, does not reduce muscle soreness when compared with placebo (100700,104648). However, there was a small benefit on the recovery of countermovement jump ability within 24 hours (104648). Furthermore, another small clinical study in adults unaccustomed to exercise shows that taking collagen peptides 10 grams daily for 33 days modestly reduces muscle soreness and fatigue immediately after the exercise load, but not 2 hours after exercise or the next morning, when compared with placebo (111639). Also, a small clinical study in active middle-aged adults shows that taking specific collagen peptides (SOLUGEL Collagen Peptides, PB Leiner) 10 grams daily for 6 months improves pain in those who exercise frequently (>188 minutes weekly) when compared with placebo. However, collagen peptides do not seem to improve pain in low frequency exercisers (<188 minutes weekly) (112455). Collagen peptides have also been evaluated in combination with other ingredients. One preliminary clinical study in healthy, recreationally active adults shows that taking a specific product (BioCell Collagen, BioCell Technology, LLC) containing collagen peptides from chicken collagen type II, hyaluronic acid, and chondroitin sulfate 1.5 grams twice daily for 6 weeks prior to two bouts of intense resistance exercise attenuates increases in biomarkers of muscle damage and decreases delayed onset muscle soreness when compared with placebo (96301). It is unclear if these benefits are due to collagen peptides, other ingredients or the combination.
• Gingivitis. It is unclear if oral collagen peptides are beneficial for patients with gingivitis. Details: A small clinical study in patients with mild-to-moderate chronic gingivitis shows that taking a specific collagen peptide product (Verisol B, Gelita AG) 5 grams daily for 90 days following mechanical plaque removal reduces bleeding and inflammation but does not improve plaque scores when compared with placebo (110666).
• Hypertension. Limited research suggests that oral collagen peptides may lower systolic or diastolic blood pressure. However, results are inconsistent. Details: One preliminary clinical study in patients with hypertension and type 2 diabetes shows that taking fish-derived collagen peptides 6.5 grams twice daily for 3 months modestly reduces diastolic, but not systolic, blood pressure when compared with placebo (101626). Another small clinical study in patients with mildly elevated blood pressure shows that taking a test food containing chicken leg-derived collagen peptides 2.9 grams daily for 12 weeks lowers systolic, but not diastolic, blood pressure when compared with placebo (101610). An additional small clinical study in patients with mild hypertension shows that taking chicken leg-derived collagen peptides 5.2 grams daily 4 weeks reduces systolic blood pressure by 12 mmHg when compared with baseline (101618). This study was limited by its small size and lack of a comparator group. The reasons for conflicting data are unclear.
• Insomnia. It is unclear if oral collagen peptides are beneficial for insomnia. Details: A very small clinical study in physically active males with difficulty sleeping shows that taking collagen peptides 15 grams before bedtime for 7 nights reduces the frequency of nocturnal awakenings and improves cognitive accuracy but does not improve objective measures of total sleep time, latency, efficiency, stage changes, waking after sleep onset, other cognitive function measures, or subjective measures of sleepiness, fatigue, and sleep quality when compared with placebo (112459).
• Joint pain. Most research shows that oral collagen peptides might moderately reduce joint pain in young athletes. However, evidence in elderly patients is conflicting. Details: Preliminary clinical research in student athletes with joint pain shows that taking a specific collagen peptide product (FORTIGEL, Gelita AG) 10 grams in 25 mL of liquid daily for 24 weeks modestly improves pain during movement and at rest when compared with placebo (101601). Other clinical research in young adults exercising or participating in sports at least 3 hours weekly with activity-related knee pain shows that taking this same product 5 grams daily for 12 weeks reduces pain intensity during activity by 38% to 41%, compared with a 26% to 28% reduction in those taking placebo. However, there was no improvement in pain at rest or after the activity when compared with placebo (97623,107454). Furthermore, it is not clear if these effects are clinically significant. Research on the use of collagen peptides in older patients is conflicting. A small clinical study in otherwise healthy patients aged 40-65 years with joint discomfort shows that taking a specific collagen peptides product (AVC-H2, Avicenna) 1.25 grams twice daily for 8 weeks improves overall Western Ontario and McMaster Universities Osteoarthritis (WOMAC) scores by 37% at 4 weeks, compared with 14% in those receiving placebo. However, this difference in improvement was no longer significant at 8 weeks. Collagen peptides also improved the physical activity and stiffness subdomains, but not the pain subdomain, at 4 and 8 weeks when compared with placebo (107455). A larger clinical study in patients 50 years or older with general joint pain shows that taking a specific collagen peptides product (Genacol) 1200 mg daily for 6 months does not reduce pain or improve function when compared with placebo (97657). However, collagen peptides used in combination with other ingredients have shown benefit. Preliminary clinical research in patients 51-70 years of age shows that taking a specific combination product (Gold Collagen Active, Minerva Research Labs) containing fish collagen peptides 4 grams, glucosamine hydrochloride 1000 mg, chondroitin sulfate 500 mg, L-carnitine 200 mg, and other ingredients daily for 90 days reduces joint pain by 43% when compared with baseline, while patients taking placebo saw negligible improvement in pain. A greater percentage of patients taking this product also perceived improvements in joint discomfort, flexibility, mobility, and rigidity when compared with placebo (100703). It is unclear if these effects are due to collagen peptides, other ingredients, or the combination.
• Obesity. It is unclear if oral collagen peptides are beneficial for weight loss. Details: A preliminary clinical study in adults with overweight shows that taking skate skin-derived collagen peptides 2 grams daily for 12 weeks modestly reduces body fat mass by 1.2 kg, compared with an increase of 0.3 kg in the placebo group (101621). It is unclear if collagen peptides improve weight loss or reduce body fat mass in the long-term.
• Osteoarthritis. Most research suggests that oral collagen peptides improve pain in patients with knee osteoarthritis; however, any improvement is modest and may not be considered clinically significant. Details: A meta-analysis of 3 clinical studies, all of which are included below, in adults with knee osteoarthritis shows that taking collagen peptides or hydrolyzed collagen reduces pain when compared with placebo (112456). Clinical research shows that taking specific collagen peptides (Colnatur, Protein SA) 10 grams daily for 5 months increases the number of patients who experience at least a 30% improvement in pain by approximately 42% when compared with placebo. However, there is no difference between groups when the Western Ontario and McMaster Universities (WOMAC) scale is used. Patients with the greatest joint deterioration at baseline, as well as those with the lowest dietary meat intake, seemed most likely to experience benefit from collagen peptides (97635). Another small clinical study shows that taking collagen peptides isolated from pork skin and bovine bone (Nitta Gelatin Inc.) 5 grams dissolved in 250 mL water or milk twice daily after food for 13 weeks modestly improves pain when compared with placebo (101611). Another small clinical study in patients over 40 years old shows that taking collagen peptides (Colatech) 10 grams daily for 90 days reduces pain by about 2 points on a 100-point scale, compared with a 0.9-point reduction with glucosamine sulfate 1.5 grams. Ibuprofen use was not affected (101622). One multicenter clinical study shows that taking collagen peptides 10 grams daily for 6 months does not relieve pain or improve joint function when compared with placebo, although a trend towards reduced pain and improved joint function was observed in patients with severe symptoms at baseline (7704). Collagen peptides have also been evaluated in combination with other ingredients. Clinical research in patients with osteoarthritis of the knee, hip, or hand shows that taking a specific product (BioCell Collagen, BioCell Technology, LLC) containing collagen peptides from chicken collagen type II, hyaluronic acid, and chondroitin sulfate 1 gram twice daily for up to 10 weeks reduces pain and the need for rescue analgesics and increases physical activity when compared with placebo (28678,28680). Similarly, a moderate-size clinical study in patients aged 45-75 years with mild to moderate knee osteoarthritis undergoing resistance exercise twice weekly shows that taking a specific product (Suntory Beverage and Food Asia) containing collagen peptides from chicken collagen type II, hyaluronic acid, and chondroitin sulfate 2 grams daily for 24 weeks does not improve WOMAC scores when compared with glucosamine 1.5 grams daily or placebo, but may modestly improve pain scores when compared with placebo. However, the use of rescue analgesics was not assessed. Adding essence of chicken 5.81 grams daily to collagen peptides did not improve WOMAC or pain scores (110670). Also, preliminary clinical research in patients with knee osteoarthrosis shows that taking a specific product (Ialoral 1500, PharmaSuisse Laboratories Srl) containing collagen peptides, chondroitin sulfate, hyaluronic acid, and keratin peptides for 4 weeks improves pain and function by a moderate amount when compared with baseline (104645). However, the validity of these findings is limited by the lack of statistical comparison to the control group. It is unclear if these effects are due to collagen peptides, other ingredients, or the combination.
• Osteopenia. It is unclear if oral collagen peptides prevent loss of bone mineral density (BMD) in postmenopausal adults. Details: A large clinical study in patients with reduced BMD after menopause shows that taking specific collagen peptides (Fortibone, Gelita AG) 5 grams daily for 12 months increases BMD of the spine and the femoral neck by 3% and 7%, respectively, compared with losses of 1% with placebo (101609). In a very small observational extension of this study, BMD continued to increase over an additional 4 years when compared with baseline. However, the validity of these findings is limited by the lack of a comparator group (107340). Collagen peptides have also been evaluated in combination with calcium and vitamin D. In patients with osteopenia after menopause, a small clinical study shows that taking collagen peptides calcium chelate 5 grams, containing elemental calcium 500 mg and vitamin D3 200 IU, daily for 12 months does not affect total hip, total body, or vertebral BMD when compared with calcium 500 mg and vitamin D 200 IU (101604). The validity of these results is limited by a high dropout rate and insufficient power to detect smaller effects. Conversely, another small study in this population shows that taking specific collagen peptides (Fortibone, Gelita AG) in combination with elemental calcium (as calcium lactate) 500 mg and vitamin D3 400 IU daily for 12 months improves trabecular bone mineral content, trabecular volumetric BMD, and cortical volumetric BMD, but not cortical bone mineral content, when compared with a combination tablet containing equivalent doses of elemental calcium (as calcium carbonate) and vitamin D (107453). It is unclear if these effects are due to collagen peptides, other ingredients, or the combination.
• Osteoporosis. It is unclear if oral collagen peptides improve bone mineral density (BMD) in adults with osteoporosis after menopause. Details: In patients with osteoporosis after menopause, clinical research shows that taking collagen peptides 10 grams daily in addition to twice weekly intramuscular calcitonin for 6 months does not improve BMD in the forearm when compared with calcitonin alone (104649). It is unclear if supplementation with collagen peptides improves BMD in the femoral neck or lumbar spine.
• Pressure ulcers. Oral collagen peptides might help to improve ulcer size and healing. Details: A small clinical study in patients with Stage II, III, or IV pressure ulcers shows that taking collagen peptides 5 grams orally three times daily for 8 weeks in addition to standard care improves ulcer size and exudate when compared with placebo and standard care (101612). This study was limited because it only used one scale to assess healing of the pressure ulcer. Another small clinical study in patients with stage II or III pressure ulcers shows that receiving standard care and collagen peptides with high levels of prolyl-hydroxyproline 5 grams twice daily for 16 weeks improves ulcer exudate, healing, and wound size when compared with standard care plus placebo (101620).
• Sarcopenia. Oral collagen peptides might help to increase fat-free mass. However, it is unclear if collagen peptides are more beneficial than other types of protein. Details: A small clinical study in elderly males with sarcopenia shows that taking collagen peptides from type I collagen 15 grams daily for 12 weeks along with three resistance training sessions weekly modestly increases fat-free mass and power when compared with resistance training and placebo (101624). It is unclear if supplementation with collagen peptides is more beneficial than supplementation with protein.
• Sprains. It is unclear if oral collagen peptides improve ankle instability after a previous sprain. Details: A small clinical study in athletes with chronic ankle instability from an ankle sprain shows that taking collagen peptides 5 grams daily for 6 months improves subjective ankle instability when compared with placebo. However, ankle stiffness, which is a more objective measure of ankle instability, is not improved when compared with placebo (101603).
• Tendinopathy. It is unclear if oral collagen peptides improve tendon pain. Details: A small clinical study in patients with Achilles tendinopathy shows that taking a specific collagen peptides supplement (TENDOFORTE, Gelita AG) 2.5 grams daily for 3 months in addition to a calf-strengthening program improves pain when compared with baseline (101615). The validity of this finding is limited by the lack of a comparator group.
• Wound healing. It is unclear if oral collagen peptides improve wound healing. Details: A small clinical study in healthy volunteers with wounds after photothermolysis shows that taking collagen peptides 3 grams daily for 4 weeks improves erythema, skin hydration, and skin elasticity when compared with placebo (101599). This study was limited by small size, short duration, and no direct measurement of wound healing or scar formation.
• Wrinkled skin. Some small clinical studies suggest that oral collagen peptides might help to reduce lines and wrinkles from sun damage. Details: Preliminary clinical research in females with photodamaged skin shows that taking a specific low molecular weight collagen peptide product (Evercollagen, Newtree Co.) 1000 mg daily for 12 weeks modestly improves most measures of skin wrinkling, hydration, and elasticity when compared with placebo. This specific collagen peptide product is standardized to contain more than 15% glycine-containing tripeptides, including 3% glycyl-prolyl-hydroxyproline (100702). Another moderate-sized clinical study in adults with dry and wrinkled eye skin shows that taking low-molecular weight collagen peptides (GPVGPS Collagen, Daehan Chemtech) 2000 mg daily for 12 weeks reduces skin wrinkling parameters including facial skin roughness, peak-to-valley values, maximum wrinkle height, and eye wrinkle volume and improves skin hydration and skin elasticity when compared with placebo. However, there was no improvement in maximum wrinkle depth (112458). Another preliminary clinical study shows that taking a specific combination product (BioCell Collagen, BioCell Technology, LLC) containing collagen peptides from chicken collagen type II 600 mg, low molecular weight hyaluronic acid 100 mg, and chondroitin sulfate 200 mg daily for 12 weeks reduces lines and wrinkles associated with both natural aging and photoaging by about 13% when compared to baseline (28681). This study was limited by the lack of a comparator group. Additionally, it is unclear if these effects are due to collagen peptides, other ingredients, or the combination. More evidence is needed to rate collagen peptides for these uses.

(Read more about COLLAGEN PEPTIDES)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Atopic dermatitis (eczema). It is unclear if oral hemp seed oil is beneficial in patients with eczema. Details: A small preliminary clinical trial in patients with eczema shows that taking hemp seed oil 30 mL daily for 8 weeks improves skin dryness, itchiness, and use of dermal medication when compared with baseline, but not when compared with an olive oil control (101125).
• Constipation. Oral hemp seed has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Clinical research in patients with functional constipation shows that taking a proprietary Chinese herbal medicine (Hemp Seed Pill) containing hemp seed, rhubarb root, peony root, apricot kernel, bitter orange fruit, and magnolia bark twice daily for 8 weeks results in a response rate to 43%, compared with 8% in those taking placebo. The response rate was defined as an increase of at least 1 complete spontaneous bowel movement per week. This combination product also improved the responder rate in the 2 weeks after treatment, as well as the overall use of rescue therapy, when compared with placebo (101127). Data from this study pooled with data from another larger study in adults with functional constipation shows that this same product increases the likelihood of complete response, defined as at least 3 complete spontaneous bowel movements per week or an increase over baseline of at least 1 weekly, by 1.43 times when compared with placebo. Complete spontaneous bowel movements per week also increased by 1 when compared with placebo (107319). It is unclear if these effects are due to hemp seed, other ingredients, or the combination.
• Dysmenorrhea. Although there is interest in using oral hemp for dysmenorrhea, there is insufficient reliable information about the clinical effects of oral hemp for this condition.
• Familial hypercholesterolemia. It is unclear if oral hemp seed oil is beneficial in children with this condition. Details: A small preliminary clinical trial shows that taking hemp seed oil (AlfaLife, Freia Farmaceutici Srl) 3 grams daily for 8 weeks does not improve levels of total or low-density lipoprotein (LDL) cholesterol when compared with no treatment in hyperlipidemic children aged 6-16 years who are also following a low-fat diet with high fruit and vegetable intake (101144).
• Joint pain. Although there is interest in using oral hemp for joint pain, there is insufficient reliable information about the clinical effects of oral hemp for this condition.
• Multiple sclerosis (MS). Oral hemp seed has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: A small clinical study in patients with relapsing-remitting MS shows that taking a combination of hemp seed oil 5.4-6.3 grams and evening primrose oil three times daily for 6 months seems to improve disability scores and relapse rate when compared to baseline. However, the control group in this study ingested olive oil and also experienced notable improvements in disability and relapse rates (88183). This study is limited due to high dropout rate and because there was no statistical comparison between treatment and control groups.
• Obesity. It is unclear if an oral cannabidiol-rich hemp oil extract helps to improve weight loss. Details: A small clinical study in healthy overweight adults shows that taking a specific hemp oil extract (PlusCBD Extra Strength Hemp Extract, CV Sciences) as 60 mg, providing 15 mg cannabidiol, daily for 6 weeks, does not reduce weight or body mass index when compared with placebo (103805). The validity of this study is limited due to its exploratory nature and lack of control for voluntary dietary changes.
• Osteoarthritis. It is unclear if oral hemp seed is beneficial in patients with osteoarthritis. Details: A clinical study in 18 older adults with osteoarthritis undergoing in-hospital rehabilitation following knee or hip arthroplasty shows that consuming pasta enriched with hemp seed flour for 6 weeks improves pain scores by about 3 points, compared with only 1 point in those consuming a regular pasta control (107320).
• Psychological well-being. Although there is interest in using oral hemp for psychological well-being, there is insufficient reliable information about the clinical effects of oral hemp for this condition. More evidence is needed to rate hemp for these uses.

(Read more about HEMP)

POSSIBLY EFFECTIVE

• Cachexia. Intravenous MCTs can provide calories in critically ill patients and patients with refractory cachexia, but do not seem to offer any advantages over long chain triglycerides. Details: Several small clinical studies in critically ill patients and patients with refractory cachexia secondary to cancer show that receiving parenteral nutrition with a 1:1 mixture of MCTs and long chain triglycerides is similarly effective to long chain triglycerides alone for improving metabolic parameters or nutritional status (2275,2276,93739).

POSSIBLY INEFFECTIVE

• HIV/AIDS-related wasting. Oral MCTs do not seem to promote weight gain or prevent weight loss in patients with HIV infection. Details: A large clinical study in patients with HIV infection shows that taking a peptide-based supplement containing MCTs (Peptamen Oral Complete Elemental Diet, Nestlé Clinical Nutrition) with multivitamins and minerals is no more effective than taking multivitamins and minerals alone for promoting weight gain or preventing weight loss (11730).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Age-related cognitive decline. It is unclear if oral MCTs are beneficial in patients with age-related cognitive decline. Details: A small, single-blind clinical study in older adults residing in a nursing home shows that taking MCTs 6 grams (a 3:1 mixture of caprylic acid:capric acid), with or without L-leucine 1.2 grams and vitamin D (cholecalciferol) 20 mcg, daily for up to 3 months increases mini-mental state exam (MMSE) scores by an average of 3.5 points, compared with a 0.7-point decline in those receiving a long chain triglyceride control. MMSE scores returned to baseline 1.5 months after discontinuation of MCT supplementation (105710).
• Alzheimer disease. Small clinical studies suggest that oral MCTs do not improve cognition in patients with Alzheimer disease or mild cognitive impairment. Details: A meta-analysis of small clinical studies in patients with Alzheimer disease or mild cognitive impairment shows that taking MCTs (as combinations of caprylic acid and capric acid) in doses of 20-56 grams or 22.5-165 mL daily for up to 6 months does not improve cognition when compared with placebo or baseline (103012).
• Athletic performance. It is unclear if oral MCTs are beneficial for endurance athletic performance. Details: A very small clinical study in 10 male recreational endurance runners shows that taking a ketone supplement containing MCTs and a salt form of beta-hydroxybutyrate 60 minutes prior to a run does not improve 5-kilometer run time when compared with placebo (107738). This study may have been inadequately powered to detect a difference between groups.
• Celiac disease. Although there has been interest in using oral MCTs for celiac disease, there is insufficient reliable information about the clinical effects of MCTs for this purpose.
• Chylothorax. It is unclear if oral MCTs improve time to resolution of spontaneous congenital chylothorax in neonates. Details: A small retrospective study in neonates with spontaneous congenital chylothorax shows that administering MCTs does not improve the time to resolution of chylothorax when compared with total parenteral nutrition (11729).
• Chyluria. Although there has been interest in using oral MCTs for chyluria, there is insufficient reliable information about the clinical effects of MCTs for this purpose.
• Cystic fibrosis. Although there has been interest in using oral MCTs for cystic fibrosis, there is insufficient reliable information about the clinical effects of MCTs for this purpose.
• Diabetes. Although there has been interest in using oral MCTs for diabetes, there is insufficient reliable information about the clinical effects of MCTs for this purpose.
• Epilepsy. It is unclear if oral MCTs are beneficial in adults and adolescents aged 12 years or older with drug-resistant epilepsy. Details: A small clinical study in adults and adolescents aged 12 years or older with drug-resistant epilepsy shows that adjunctive treatment with MCTs (Stepan Lipid Nutrition) as part of a non-ketogenic diet, 47-65 mL daily (about 35% of energy intake), or a maximally tolerated dose not exceeding 100 mL, for 12 weeks reduces median seizure frequency by 46% when compared with baseline (101967). The validity of this study is limited by its small sample size and the lack of a comparator group.
• Gallbladder disease. Although there has been interest in using oral MCTs for gallbladder disease, there is insufficient reliable information about the clinical effects of MCTs for this purpose.
• Hypertriglyceridemia. Oral MCTs might improve triglyceride levels and body weight in some patients with overweight and hypertriglyceridemia, but its effect in other populations is unclear. Details: Clinical research in patients with overweight and hypertriglyceridemia shows that taking 25-30 grams of an oil containing MCTs 13% daily for 8 weeks decreases triglyceride levels by 78 mg/dL when compared with consuming oil containing only long chain fats. Body weight, body fat, and waist circumference also decreased (93740). However, this benefit may be restricted to this specific population only. Some research in patients with obesity or patients with a normal body weight shows that taking 25-30 grams of an oil containing MCTs daily for 8 weeks does not lower triglyceride levels (93741).
• Obesity. Small clinical studies suggest that oral MCTs modestly improves weight loss; however, any effects may not be clinically relevant. Details: A meta-analysis of clinical research shows that taking MCTs decreases body weight by 0.5 kg, waist circumference by 1.5 cm, and hip circumference by 0.8 cm when compared with a control group not taking MCTs. Doses used in available research have ranged from 1-54 grams daily, or 1% to 24% of energy for 4-16 weeks (93735). Most research shows that at least 4 weeks is needed before effects are seen. The greatest benefit seems to occur in patients of Asian descent, males, and patients with higher body mass indices at baseline (93730,93731,93735,93736). While MCTs may improve weight loss in some patients, the effects are generally modest and may not be clinically relevant.
• Prematurity. It is unclear if oral or topical MCTs are beneficial in preterm infants. Details: A meta-analysis of small studies involving 136 otherwise healthy preterm infants receiving full enteral diets with formula as the predominant source of nutrition shows that administration of formulas containing at least 30% of fat by weight as MCTs (ranging in concentration from 6% to 80%) for at least 7 days does not affect short-term growth, including weight, length, and head circumference, when compared with formulas containing less than 30% of fat by weight as MCTs. Due to small study sizes, it is unclear whether either type of formula was better tolerated. The validity of this analysis is limited by the presence of unclear risk of potential bias in the included studies (105711). MCT oil has also been evaluated for the prevention of gastrointestinal Candida infections. A very small clinical study in preterm infants shows that adding MCT oil (Nestlé Health Science) 0.5 mL per ounce of formula or breast milk for 1 week reduces Candida colonization when compared with no MCT oil (101968). Topical use of MCT oil has also been evaluated for growth in preterm infants. A small clinical study in preterm infants weighing 1500-2000 grams shows that massage with MCT oil, consisting of tactile and kinesthetic stimulation, three times daily for 7 days increases weight gain when compared with no massage (107739). The validity of this finding is limited by unclear reporting. Also, it is unclear if this effect is due to MCT oil, massage, or the combination.
• Primary intestinal lymphangiectasia. It is unclear if oral MCTs are beneficial for the management of primary intestinal lymphangiectasia. Details: A review of 55 case reports suggests that taking MCTs as part of a low-fat, high-protein diet resolves symptoms in 63% of patients with primary intestinal lymphangiectasia, compared with 36% of patients receiving no treatment or other treatments such as diuretic therapy, albumin transfusions, resection of isolated segments of affected bowels, etc. Mortality is also reduced by 79% in patients treated with diet restrictions and MCTs when compared with those receiving no treatment or other treatments (93733).
• Sarcopenia. It is unclear if oral MCTs are beneficial in frail older adults. Details: A small clinical study in older adults residing in a nursing home shows that taking MCTs 6 grams, leucine 1.2 grams, and vitamin D (cholecalciferol) 20 mcg daily for 3 months increases body weight by 1.1 kg, right-hand grip strength by 13%, and peak expiratory flow by 28% when compared with baseline. These improvements are also significant when compared with patients receiving no supplementation (93729). In a second study in this same population conducted by the same research group, taking MCTs 6 grams, with or without leucine 1.2 grams and vitamin D (cholecalciferol) 20 mcg, daily for 3 months does not increase body weight or hand grip strength. There were small to moderate improvements in opening and closing the legs, repetitive swallowing, and measures of functional independence (101970). The validity of these findings is limited by the single-blind nature of the studies and the large number of endpoints. It is also unclear if any benefits are due to MCTs, other ingredients, or the combination.
• Short bowel syndrome. Although there has been interest in using oral MCTs for short bowel syndrome, there is insufficient reliable information about the clinical effects of MCTs for this purpose. More evidence is needed to rate MCTs for these uses.

(Read more about MEDIUM CHAIN TRIGLYCERIDES (MCTs))

POSSIBLY EFFECTIVE

• Benign prostatic hyperplasia (BPH). Taking oral pumpkin seed or pumpkin seed oil may improve symptoms of BPH. Details: One study in patients with BPH shows that taking pumpkin seed 5 grams twice daily for 12 months may be more effective for controlling symptoms than pumpkin seed extract 1000 mg twice daily (92383). A specific pumpkin seed extract (Prosta Pink Forte) 1-2 capsules daily for 12 weeks has also been used (11231). Some preliminary clinical research also suggests that taking pumpkin seed oil (Prostafit, EuRho Vital) two tablets daily for 6 months may be as effective as the medication prazosin (92382). Pumpkin seed oil has also been compared with tamsulosin. A clinical study comparing pumpkin seed oil 360 mg twice daily to tamsulosin 0.4 mg once nightly for 3 months shows that both treatment groups report improvements in BPH symptoms and quality of life when compared with baseline, although improvement appears greater in the tamsulosin group, specifically when measured at 1 month and 3 months. In the pumpkin seed oil group, adverse effects were reported in 0% of patients, compared with 15% of patients taking tamsulosin (107842). The validity of this study is limited due to the short duration of treatment. Pumpkin seed oil or extracts have also been studied in combination with saw palmetto (6777), with saw palmetto, nettle root, and lemon extracts plus beta carotene (5093), and with saw palmetto, small flowered willow herb, lycopene, and pygeum (92379).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Androgenic alopecia. Oral pumpkin seed oil might improve hair regrowth in males with mild to moderate hair loss. Details: Clinical research in males with mild to moderate hair loss shows that taking pumpkin seed oil (Octa Sabal Plus, Dreamplus Co. Ltd.) 400 mg daily in divided doses for 24 weeks increases hair count by 30% when compared with placebo. Self-rated improvement and satisfaction scores were 62% and 52% with pumpkin seed oil and placebo, respectively (92378). Clinical research in patients with female pattern hair loss shows that applying 1 mL of pumpkin seed oil to the scalp daily for 30 days improves hair regrowth similarly to minoxidil 5% foam, 1 mL daily (104974).
• Interstitial cystitis. Although there is interest in using oral pumpkin for interstitial cystitis, there is insufficient reliable information about the clinical effects of pumpkin for this condition.
• Intestinal parasite infection. Although there is interest in using oral pumpkin for intestinal parasite infection, there is insufficient reliable information about the clinical effects of pumpkin for this condition.
• Overactive bladder. Oral pumpkin seed oil has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research in females with overactive bladder shows that taking a specific combination product (Granu Fink femina, Omega Pharma) containing pumpkin seed oil 227 mg, sweet sumac bark extract 56 mg, and hops cone extract 18 mg three times daily for 12 weeks decreases the frequency of urination and leakage and improves quality of life when compared to baseline (103253). The validity of these findings is limited by the lack of a control group. Additionally, it is unclear if these findings are due to pumpkin seed oil, other ingredients, or the combination.
• Urinary tract infections (UTIs). Although there is interest in using oral pumpkin for UTIs, there is insufficient reliable information about the clinical effects of pumpkin for this condition. More evidence is needed to rate pumpkin for these uses.

(Read more about PUMPKIN)

LIKELY EFFECTIVE

• Cystic fibrosis. Long-term nebulized hypertonic sodium chloride improves lung function and reduces pulmonary exacerbations in patients with cystic fibrosis. Details: Meta-analyses of clinical research in adults with cystic fibrosis show that, when taken along with a bronchodilator and other standard therapies, nebulized hypertonic sodium chloride in concentrations of 3% to 7%, up to 10 mL twice daily for 4 weeks, increases forced expiratory volume at one second (FEV1) when compared with isotonic saline (sodium chloride 0.9%) (26230,26230). This benefit was not seen at 48 weeks. Other clinical research in adults with cystic fibrosis shows that inhaling sodium chloride 7%, 4 mL twice daily for 48 weeks, does not improve FEV1 when compared with isotonic saline. However, chronic treatment with hypertonic saline does reduce the number of pulmonary exacerbations and increase the number of patients without pulmonary exacerbations when compared with isotonic saline (29402). It is not clear if this benefit occurs in children with cystic fibrosis. The Pulmonary Clinical Practice Guidelines Committee of the Cystic Fibrosis Foundation recommends that individuals with cystic fibrosis aged 6 years or older use nebulized hypertonic saline long-term to improve lung function, reduce the number of exacerbations, and improve quality of life (29403).

POSSIBLY EFFECTIVE

• Amphotericin B nephrotoxicity. Oral sodium chloride seems to prevent nephrotoxicity associated with use of amphotericin B. Details: Clinical research shows that administering oral or intravenous sodium chloride 150 mEq daily during treatment with amphotericin B can attenuate the rise in serum creatinine levels and preserve renal function when compared to treatment with amphotericin B alone (26226).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Bipolar disorder. It is unclear if oral sodium is beneficial in preventing lithium level fluctuations in patients with bipolar disorder. Details: A moderate-sized open-label clinical study in adults with type I bipolar disorder receiving lithium carbonate shows that taking sodium chloride 1 gram daily for 12 weeks along with dietary salt restriction of 1 gram daily reduces the percentage of patients with lithium level fluctuations above 0.8 mEq/L, but does not significantly affect serum sodium, potassium, aldosterone, or creatinine levels when compared with controls who were not salt restricted, but were advised not to consume additional salt at the table (112909). However, the interpretation of these findings is limited by missing data in both groups.
• Canker sores. Although there is interest in using topical sodium chloride for canker sores, there is insufficient reliable information about the clinical effects of sodium chloride for this condition.
• Congestive heart failure. It is unclear if oral sodium is beneficial in patients with acute decompensated heart failure requiring decongestive therapy with diuretics. Details: A moderate-sized clinical study in adults hospitalized with acute decompensated heart failure requiring high-dose intravenous furosemide shows that taking sodium chloride 2 grams three times daily for up to 96 hours does not affect patient weight or serum creatinine levels when compared with placebo (112911). However, the clinical relevance of this study is unclear and it may have been inadequately powered to detect a difference between groups.
• Conjunctivitis. Although there is interest in using ophthalmic sodium chloride for conjunctivitis, there is insufficient reliable information about the clinical effects of sodium chloride for this condition.
• Hyponatremia. Although there is interest in using oral sodium chloride for hyponatremia, there is insufficient reliable information about the clinical effects of oral sodium chloride for this condition.
• Pharyngitis. Although there is interest in using topical sodium chloride for pharyngitis, there is insufficient reliable information about the clinical effects of sodium chloride for this condition.
• Prematurity. It is unclear if oral sodium is beneficial for premature infants. Details: Preliminary clinical research in infants born at less than 32 weeks' gestation shows that adding sodium 4 mEq/kg daily to enteral feedings, starting from the 7th day after birth and continuing through the 35th day, reduces the risk of developing hyponatremia and improves weight gain when compared with adding water (98180). A small, open-label clinical study in newborns less than 35 weeks gestation shows that high sodium intake, defined as an average of 0.25% sodium in maintenance fluids, for 48 hours on day 2 and 3 after birth results in less weight loss within the first 72 hours of life when compared with control, but does not improve mortality, length of hospital stay, or complications from prematurity (112908). However, interpretation of these findings is limited by varied concentrations of sodium as an intervention. More evidence is needed to rate sodium for these uses.

(Read more about SODIUM)

POSSIBLY EFFECTIVE

• Coronary heart disease (CHD). The U.S. Food and Drug Administration (FDA) allows a qualified health claim stating that using high-oleic acid sunflower oil as a replacement for other dietary fats and oils higher in saturated fat may reduce the risk of CHD. Details: A meta-analysis of clinical studies shows that replacing 7.5% of energy from partially hydrogenated vegetable oils with high-oleic acid sunflower oil can reduce CHD risk by about 9% to 19%. Furthermore, analysis of results from observational studies found that replacing partially hydrogenated oil with high-oleic acid sunflower oil is associated with a 16% to 35% reduction in the risk of CHD events (95745). The FDA allows for a qualified health claim that replacing dietary fats and oils higher in saturated fat with high-oleic acid sunflower oil may reduce the risk of CHD. To achieve this benefit, the use of high-oleic acid sunflower oil should not increase total daily energy intake. The suggested daily dietary intake is about 20 grams (1.5 tbsp) of high-oleic sunflower oil in place of other fats and oils (98563). Sunflower oil that contains high amounts of linoleic acid rather than oleic acid does not appear to improve cholesterol levels or reduce the risk of cardiovascular events in patients with CHD (96205).
• Hypercholesterolemia. Consuming sunflower oil in the diet may reduce low-density lipoprotein (LDL) cholesterol levels in some patients. Details: There is evidence that using sunflower oil in the diet as 45-50 grams daily for up to 12 weeks is more effective than olive oil for decreasing LDL cholesterol and apolipoprotein B levels in healthy individuals (9780). Also, clinical research in patients with mild hyperlipidemia or moderate hypercholesterolemia shows that consuming specific brands of mid-oleic acid (NuSun) or high-oleic acid (Sunola, Meadow Lea Foods) sunflower oils as 15% to 20% of dietary calories for up to 5 weeks is more effective than olive oil or saturated fat for decreasing total cholesterol, LDL cholesterol, and apolipoprotein B levels (76697,76698). Also, consuming a high-oleic sunflower oil-rich diet for 3 weeks decreases total cholesterol levels to a greater extent than diets enriched with palm oil or medium-chain triglycerides in patients with mild hypercholesterolemia (67569). Other preliminary clinical research in patients with moderate hypercholesterolemia shows that consuming a diet rich in sunflower oil for 3 weeks decreases total cholesterol and LDL cholesterol levels when compared with baseline. However, levels of high-density lipoprotein (HDL) cholesterol appear to be lowered as well (76714). Despite these beneficial effects, sunflower oil might be less effective than some other dietary oils. Taking sunflower oil for 3 months appears to be less effective than rice bran oil for lowering cholesterol in patients with hypercholesterolemia (76699). Also, while consuming sunflower oil 45 grams daily, as part of the diet and as a supplement, for 12 weeks reduces levels of total cholesterol and LDL cholesterol when compared to baseline, it appears to be less effective at reducing total cholesterol levels than flaxseed oil in certain patients at risk for atherosclerosis (76696). In addition, taking sunflower oil 15.1 grams daily for 4 months does not appear to reduce levels of total or LDL cholesterol in patients with peripheral vascular disease (76691).

POSSIBLY INEFFECTIVE

• Hypertension. Oral sunflower oil does not seem to lower blood pressure. Details: Preliminary clinical research in adults with hypertension shows that taking sunflower oil 30-40 grams daily for one year is less effective than extra-virgin olive oil for reducing blood pressure (5091). Also, clinical research in elderly adults with hypertension shows that taking 60 grams of sunflower oil daily for 4 weeks is less effective than virgin olive oil for reducing systolic blood pressure (76692).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Atherosclerosis. It is unclear if oral sunflower oil is beneficial for atherosclerosis; some clinical research suggests that it may provide less benefit than other dietary oils. Details: Some preliminary clinical research in individuals with overweight and obesity shows that taking sunflower oil 30 mL (about 27 grams) daily for 90 days decreases carotid intima-media thickness (CIMT) by 3.5% when compared to baseline, but not when compared with olive oil or flaxseed oil. Sunflower oil also improves flow-mediated vasodilation by 73% when compared to baseline, compared with no improvement in those taking flaxseed oil or olive oil (99303). Other preliminary clinical research in individuals waiting for carotid endarterectomy shows that taking sunflower oil 6 grams daily for up to 189 days is less effective than the same dose of fish oil, and equivalent to control oil, for improving the status of atherosclerotic plaques (76688).
• Atopic dermatitis (eczema). Although there is interest in using topical sunflower oil for atopic dermatitis, there is insufficient reliable information about the clinical effects of sunflower oil for this condition.
• Child growth. It is unclear if topical sunflower oil is beneficial for early child growth. Details: A large preliminary clinical trial in newborn infants in India shows that exclusive topical application of 10 mL of high-linoleic acid sunflower oil, an average of 2.7 times daily for about one month, increases weight gain by 1.3 gram/kg daily when compared with a control group exclusively given traditional vigorous massage with mustard oil an average of 2.4 times daily. The increase in weight gain was highest for infants weighing less than 1500-2000 grams at birth (108141). However, it is unclear if any beneficial effects are due to the sunflower oil, the massage, their combination, or the lack of mustard oil.
• Dry mouth. It is unclear if rinsing the mouth with sunflower oil is beneficial for dry mouth. Details: Preliminary clinical research in adults with moderate dry mouth associated with medication use shows that using a sunflower oil mouth rinse and gargling for 5-8 minutes before spitting it out twice daily for 7 days improves dry mouth scores by 23% when compared to baseline. Sunflower oil also improves the ability to swallow and sleep with dry mouth, but not other dry mouth symptoms or saliva flow rate, when compared with control (105523). This study may have been inadequately powered to detect a difference between groups.
• Dry skin. It is unclear if topical sunflower oil is beneficial for dry skin in infants. Details: Preliminary clinical research in full-term, newborn infants shows that topical application of 4 drops of sunflower oil to each of three parts of the body twice daily for 4 weeks improves skin hydration, but not skin barrier function or the presence of redness or rash, when compared with not using topical oil. Furthermore, use of sunflower oil may impede the normal development of skin barrier function that occurs during the first four weeks of life (96144).
• Fetal and premature infant mortality. It is unclear if topical sunflower oil is beneficial for preventing early mortality in premature infants. Details: A large clinical trial in newborn infants in India shows that exclusive topical application of 10 mL of high-linoleic acid sunflower oil, an average of 2.7 times daily for about one month, reduces infant mortality by 58% when compared to a control group exclusively given traditional vigorous massage with mustard oil an average of 2.4 times daily. A subgroup analysis of premature infants also shows a 52% reduction in mortality with the use of high-linoleic acid sunflower oil when compared with control (108143). However, it is unclear if any beneficial effects are due to the sunflower oil, the massage, their combination, or the lack of mustard oil.
• Prematurity. Small to moderate-sized clinical studies suggest that topical sunflower oil might increase body weight, reduce length of hospital stay, and improve skin hydration and skin integrity in preterm neonates. Details: Preliminary clinical research in preterm infants with low birth weight shows that massaging for 5-10 minutes using sunflower oil 10 mL/kg three times daily for 2 weeks increases weight gain by approximately 35% over 2 months when compared with massage using no oil. Sunflower oil massage does not appear to increase length or head circumference (96145). A small clinical study in premature infants in the intensive care unit (ICU) shows that a similar massage with sunflower oil three times daily for 5 days shortens ICU stay by about 5 days when compared with no massage. Furthermore, over the ICU stay, infants in the sunflower oil massage group gained an average of 15 grams, whereas infants in the control group experienced weight loss (98479). The effect of sunflower oil on skin hydration and integrity in preterm infants has also been assessed. A clinical trial of 90 preterm infants in a Turkish neonatal ICU shows that whole body skin treatment (not massage) with either sunflower oil or almond oil 4 mL/kg four times daily for 5 days improves measures of skin hydration and skin integrity when compared with control infants that did not receive oil treatment. The sunflower and almond oil treatments are equally effective (105524). Another clinical study in 90 infants (42% preterm) in a Turkish neonatal ICU shows that whole body skin treatment (not massage) with sunflower oil or liquid Vaseline 3-4 mL for preterm and 5-6 mL for full-term infants daily for 16 days improves measures of skin integrity when compared with control infants that did not receive any oil treatment. Skin integrity scores were better in the sunflower oil group than liquid Vaseline at some time points (111726).
• Psoriasis. Although there is interest in using topical sunflower oil for psoriasis, there is insufficient reliable information about the clinical effects of sunflower oil for this condition.
• Rheumatoid arthritis (RA). Although there is interest in using oral sunflower oil for RA, there is insufficient reliable information about the clinical effects of sunflower oil for this condition.
• Tinea pedis. It is unclear if topical sunflower oil is beneficial for tinea pedis. Details: Preliminary clinical research shows that topical application of a specific brand of ozonized sunflower oil (Oleozon) twice daily for 6 weeks is as effective as ketoconazole for curing athlete's foot (76687). More evidence is needed to rate sunflower oil for these uses.

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POSSIBLY SAFE ...when used orally and appropriately, short-term. Collagen peptides have been used with apparent safety at doses up to 10 grams daily for up to 6 months and in doses up to 40 grams daily for up to 4 weeks (97632,97635,101615,101621,104638,104643,104644,104647,101622,110667). PREGNANCY &

LACTATION:
Insufficient reliable information available; avoid using.

(Read more about COLLAGEN PEPTIDES)

LIKELY SAFE ...when hemp seed, hemp protein, and hemp seed oil are used orally in food amounts. Hulled hemp seed, hemp seed protein powder, and hemp seed oil are generally recognized as safe (GRAS) in the US (100531).

POSSIBLY SAFE ...when hemp seed oil is used orally and appropriately as medicine, short-term. Hemp seed oil in doses of 2-6.3 grams daily has been safely used for 3-6 months (88183,16791,101145). Hemp seed oil in doses of 30 mL (27.6 grams) daily has been used safely for 2 months (101125). There is insufficient reliable evidence available about the safety of hemp oil, flowers, or leaves.

CHILDREN:
There is insufficient reliable information available about the safety of hemp in children. Adverse effects have been noted in case reports, but details related to specific hemp products are limited (101153,110287).

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

(Read more about HEMP)

LIKELY SAFE ...when used orally and appropriately (11726,11727,11728,11729,11730,93729). ...when used parenterally and appropriately (2275,2276,2278,11726,11727,11728,11729). There is insufficient reliable information available about the safety of MCTs when used topically.

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.

(Read more about MEDIUM CHAIN TRIGLYCERIDES (MCTs))

LIKELY SAFE ...when used orally and appropriately in amounts commonly found in foods.

POSSIBLY SAFE ...when the seed or seed oil is used orally and appropriately in medicinal amounts, short-term. Pumpkin seed has been used with apparent safety in a dose of up to 10 grams daily for up to 12 months (92383). Pumpkin seed oil has been used with apparent safety in a dose of up to 400 mg daily for up to 6 months (92378). There is insufficient reliable information available about the safety of pumpkin seed oil when used topically.

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using amounts greater than those found in food.

(Read more about PUMPKIN)

LIKELY SAFE ...when used orally and appropriately. Sodium is safe in amounts that do not exceed the Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams daily (100310). Higher doses can be safely used therapeutically with appropriate medical monitoring (26226,26227).

POSSIBLY UNSAFE ...when used orally in high doses. Tell patients to avoid exceeding the CDRR intake level of 2.3 grams daily (100310). Higher intake can cause hypertension and increase the risk of cardiovascular disease (26229,98176,98177,98178,98181,98183,98184,100310,109395,109396,109398,109399). There is insufficient reliable information available about the safety of sodium when used topically.

CHILDREN: LIKELY SAFE
when used orally and appropriately (26229,100310). Sodium is safe in amounts that do not exceed the CDRR intake level of 1.2 grams daily for children 1 to 3 years, 1.5 grams daily for children 4 to 8 years, 1.8 grams daily for children 9 to 13 years, and 2.3 grams daily for adolescents (100310).

CHILDREN: POSSIBLY UNSAFE
when used orally in high doses. Tell patients to avoid prolonged use of doses exceeding the CDRR intake level of 1.2 grams daily for children 1 to 3 years, 1.5 grams daily for children 4 to 8 years, 1.8 grams daily for children 9 to 13 years, and 2.3 grams daily for adolescents (100310). Higher intake can cause hypertension (26229).

PREGNANCY AND LACTATION: LIKELY SAFE
when used orally and appropriately. Sodium is safe in amounts that do not exceed the CDRR intake level of 2.3 grams daily (100310).

PREGNANCY AND LACTATION: POSSIBLY UNSAFE
when used orally in higher doses. Higher intake can cause hypertension (100310). Also, both the highest and the lowest pre-pregnancy sodium quintile intakes are associated with an increased risk of hypertensive disorders of pregnancy, including gestational hypertension and pre-eclampsia, and the delivery of small for gestational age (SGA) infants when compared to the middle intake quintile (106264).

(Read more about SODIUM)

LIKELY SAFE ...when used orally and appropriately in amounts commonly found in foods. When used as a substitute for other dietary oils, the recommended intake of high-oleic acid sunflower oil is 20 grams (1.5 tablespoons) daily (9780,98563). ...when used topically and appropriately, short-term. Sunflower oil has been applied to the skin twice daily for up to 6 weeks (76687). There is insufficient reliable information available about the safety of sunflower oil when used as an oral rinse.

CHILDREN: LIKELY SAFE
when used orally and appropriately in amounts commonly found in foods.

CHILDREN: POSSIBLY SAFE
when applied topically and appropriately, short-term. Sunflower oil has been applied to the skin of infants daily for up to 2 months (96144,96145,105524,108143). There is insufficient reliable information available about the safety of sunflower oil when used orally in larger amounts as medicine.

PREGNANCY AND LACTATION: LIKELY SAFE
when used orally and appropriately in amounts commonly found in foods. There is insufficient reliable information available about the safety of sunflower oil when used in amounts greater than those found in food.

(Read more about SUNFLOWER OIL)

(Read more about COLLAGEN PEPTIDES)

ACE INHIBITORS (ACEIs) Interaction Rating = Minor Be watchful with this combination. Severity = Moderate •  Occurrence = Unlikely •  Level of Evidence = D Theoretically, consuming hemp seed protein isolate with ACE inhibitors might have additive effects and increase the risk of hypotension.  Details Hemp seed protein hydrolysate has shown ACE inhibitor-like effects in a hypertensive animal model (101136). However, hempseed oil consumption does not seem to reduce blood pressure in humans (101144). Until more is known, monitor blood pressure and potassium levels.

ANTICOAGULANT/ANTIPLATELET DRUGS Interaction Rating = Minor Be watchful with this combination. Severity = Mild •  Occurrence = Possible •  Level of Evidence = D Theoretically, hemp seed might increase the risk of bleeding when used concomitantly with anticoagulant/antiplatelet drugs.  Details In animal research, hemp seed at 5% of the diet inhibits platelet aggregation in vitro (101137). However, in human research, taking hemp seed oil 2 grams daily for 12 weeks does not inhibit the aggregation of platelets in vitro (16791).

ANTIHYPERTENSIVE DRUGS Interaction Rating = Minor Be watchful with this combination. Severity = Moderate •  Occurrence = Unlikely •  Level of Evidence = D Theoretically, hemp seed protein may have additive effects with antihypertensive drugs.  Details In a hypertensive animal model, hemp seed protein hydrolysate reduced systolic blood pressure by a mechanism possibly involving the inhibition of renin and angiotensin converting enzyme (ACE) activities. However, there was no effect of hemp seed protein on blood pressure in normotensive animals (101136). Furthermore, hempseed oil consumption does not seem to reduce blood pressure in humans (101144).

ESTROGENS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, hemp might interfere with hormone therapy due to its estrogenic effects.  Details In an ovariectomized animal model, a diet containing hemp seed 1%, 2%, or 10% resulted in normalized plasma levels of 17-beta-estradiol (101132). The mechanism of action for this effect is unclear.

(Read more about HEMP)

(Read more about MEDIUM CHAIN TRIGLYCERIDES (MCTs))

LITHIUM Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Pumpkin might reduce excretion and increase levels of lithium.  Details Pumpkin is thought to have diuretic properties (92383). Theoretically, this might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.

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ANTIHYPERTENSIVE DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = A Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.  Details High intake of dietary sodium can increase systolic and diastolic blood pressure (26222). Also, high intake of sodium may necessitate increased use of antihypertensive medications to achieve blood pressure control in some patients, such as those with chronic kidney disease (26223).

CORTICOSTEROIDS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Concomitant use of mineralocorticoids and some glucocorticoids with sodium supplements might increase the risk of hypernatremia.  Details Mineralocorticoids and some glucocorticoids (corticosteroids) cause sodium retention. This effect is dose-related and depends on mineralocorticoid potency. It is most common with hydrocortisone, cortisone, and fludrocortisone, followed by prednisone and prednisolone (4425).

LITHIUM Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = B Altering dietary intake of sodium might alter the levels and clinical effects of lithium.  Details High sodium intake can reduce plasma concentrations of lithium by increasing lithium excretion (26225). Reducing sodium intake can significantly increase plasma concentrations of lithium and cause lithium toxicity in patients being treated with lithium carbonate (26224,26225). Stabilizing sodium intake is shown to reduce the percentage of patients with lithium level fluctuations above 0.8 mEq/L (112909). Patients taking lithium should avoid significant alterations in their dietary intake of sodium.

SODIUM-CONTAINING DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Concomitant use of sodium-containing drugs with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia and long-term sodium-related complications.  Details The Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams of sodium daily indicates the intake at which it is believed that chronic disease risk increases for the apparently healthy population (100310). Some medications contain high quantities of sodium. When used in conjunction with sodium supplements or high-sodium diets, the CDRR may be exceeded. Additionally, concomitant use may increase the risk for hypernatremia; this risk is highest in the elderly and people with other risk factors for electrolyte disturbances.

TOLVAPTAN (Samsca) Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = C Theoretically, concomitant use of tolvaptan with sodium might increase the risk of hypernatremia.  Details Tolvaptan is a vasopressin receptor 2 antagonist that is used to increase sodium levels in patients with hyponatremia (29406). Patients taking tolvaptan should use caution with the use of sodium salts such as sodium chloride.

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ANTIDIABETES DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = B Theoretically, sunflower oil might decrease the effectiveness of antidiabetes medications.  Details A diet using sunflower oil as a fat source can cause increased fasting blood glucose levels in patients with type 2 diabetes (8132). Dose adjustments to diabetes medications might be necessary.

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General ...Orally, collagen peptides seem to be well tolerated.

Dermatologic ...Orally, a case of a mild skin rash has been reported for a patient who used a specific collagen peptide-containing product (BioCell Collagen) (28680).

Gastrointestinal ...Orally, collagen peptides may cause nausea, dyspepsia, diarrhea, and flatulence, but these adverse effects are rare (101622,104639).

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General ...Orally, hemp products are generally well tolerated in food amounts. In larger amounts, hemp seed oil seems to be well tolerated.
Serious Adverse Effects (Rare):
Orally: Rare cases of anaphylaxis have been reported. Long QT syndrome, torsades de pointes, and syncope have also been reported rarely.

Cardiovascular ...Acquired long QT syndrome, torsades de pointes, and syncope have been reported in a 56-year-old woman following the intake of supplements containing hemp oil. The hemp supplements provided cannabidiol (CBD), and possibly cannabigerol (CBG). Although the exact dose is unknown, up to six times the recommended dose had been used for approximately 6 weeks, in combination with a supplement containing berberine. While hospitalized, intravenous magnesium and saline were used to stabilize heart rhythm. It is unknown whether this adverse effect was related to the hemp oil, berberine, or their interaction (110104).

Hepatic ...Orally, there is a case report of elevated liver enzymes and hepatitis in a two-year-old boy given hemp extract 2. 5 mL, providing 125 mg phytocannabinoid, five to eight times daily for infantile spasms and refractory seizures. The total dose of phytocannabinoids was approximately 60-100 mg/kg daily (110287).

Immunologic ...Orally, there are case reports of allergy to hemp seed, although this is uncommon (101140,101154). A 44-year-old male developed hives during a meal of hemp seed-crusted seafoods. Later, he developed facial swelling, shortness of breath, and problems speaking. Evaluation revealed allergy to a specific protein in hemp seed. He did not react to smoked cannabis (101140). In other cases, anaphylaxis, facial swelling, and worsening asthma have been reported in association with a first exposure to hemp seed, although some had smoked cannabis previously (101154).
Topically, a case of patch-test confirmed allergic contact dermatitis to hemp seed oil has been reported in a 22-year-old woman. The initial rash started at the application point on her back and spread to her arms, hands, and neck (110288).
Airborne exposure to hemp pollen is a relatively common cause of allergic respiratory symptoms in some locations (101155).

Neurologic/CNS ...Orally, cases of acute cannabinoid toxicity with neurological symptoms in children and adults have been associated with intake of hemp seed oil. There is a case report of decreased alertness, stupor, bloodshot eyes, and fixed gaze in a 2-year-old male probably related to the intake of one teaspoon hemp seed oil (CANAH) containing 0.06% delta-9-tetrahydrocannabinol (THC) twice daily for 3 weeks. After stopping the oil, irritability was reported over the next few days (101153).

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General ...Orally, MCTs can cause significant gastrointestinal upset, especially with higher doses.
Most Common Adverse Effects:
Abdominal discomfort, diarrhea, essential fatty acid deficiency, intestinal gas noises, irritability, nausea, reflux, vomiting. Gastrointestinal disturbances are thought to be associated with higher doses of MCT. Since MCTs are fats, excessive consumption can result in weight gain.

Cardiovascular ...There is some concern that MCTs may further increase the risk for hypertriglyceridemia in some preterm infants due to immature lipoprotein lipase activity in these infants. A case of extremely elevated triglyceride levels of 4,736 mg/dL and associated lipemia retinalis has been reported at 43 weeks post-menstrual age (PMA) for a preterm infant born at 30 weeks' gestational age. It was discovered that the baby had been receiving MCT supplements in addition to breast milk starting at 42 weeks' PMA. MCT supplements were discontinued. One month later triglycerides were reduced to 287 mg/dL, and the retinal vasculature had a normal hue. However, at 2-month follow-up, triglyceride levels were elevated to levels higher than normal for age despite MCT discontinuation. Investigators speculated that a genetic disorder of lipid metabolism may also have contributed to the elevated triglyceride levels in addition to use of MCTs (96330).

Gastrointestinal ...Orally, MCTs can cause significant gastrointestinal upset. Diarrhea is the most commonly reported side effect (11723,93737,93738,101967). Other reported side effects include vomiting, irritability, nausea, reflux, abdominal discomfort, intestinal gas noises, and essential fatty acid deficiency (11723,93738,101967). Taking MCTs with food can reduce these adverse effects (93737). Gastrointestinal disturbances are thought to be associated with higher doses of MCT, such as 85 grams (93731).

Other ...Excessive consumption of MCTs can result in weight gain. MCT oil contains 6-8.5 calories per gram. One tablespoon provides about 14 grams and about 115 calories (11724).

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General ...Orally, pumpkin products are generally well tolerated.
Most Common Adverse Effects:
Orally: Abdominal discomfort, diarrhea, nausea, and vomiting.
Serious Adverse Effects (Rare):
Orally: Anaphylaxis.

Dermatologic ...There are two case reports of adult females developing substantial transient hair loss 1-3 weeks after consumption of a meal containing either bitter-tasting pumpkin or undefined squash. This adverse effect was attributed to a high concentration of cucurbitacin, which is commonly found in wild pumpkins (104535).

Gastrointestinal ...Orally, pumpkin seed oil has been reported to cause mild abdominal discomfort in clinical trials (5093,92378). There are also two case reports of adults developing severe nausea, vomiting, and diarrhea following consumption of a meal containing either bitter-tasting pumpkin or undefined squash. These adverse effects were attributed to a high concentration of cucurbitacin, which is commonly found in wild pumpkins (104535).

Immunologic ...Orally, pumpkin seed oil and pumpkin pulp have been reported to cause anaphylactic reactions in children and adults. A case review highlights 4 cases of anaphylaxis in children (3 from pumpkin pulp, 1 from pumpkin seeds), and 7 cases in adults (1 from pumpkin flesh, 6 from pumpkin seeds). Symptoms of anaphylaxis include urticaria, angioedema of the lips or face, dyspnea, dysphagia, and oropharyngeal itching and swelling. A case report describes a 2-year-old male presenting with urticaria, swollen lips, and increased dyspnea 10 minutes after ingesting pumpkin seeds. The patient was found to have elevated allergen-specific immunoglobulin E (IgE) and a positive skin-prick test for pumpkin seeds. Symptoms resolved after treatment with epinephrine, systemic glucocorticoids, salbuterol, and antihistamines (107843).
There may also be concern for allergic reaction due to inhalation or topical exposure. One case report describes an 8-year-old child developing anaphylaxis while carving a pumpkin; another highlights that inhalation of pumpkin seed flour may have potentiated anaphylaxis in 3 individuals following the ingestion of pumpkin seeds (107843). Further research is necessary to assess the relationship between anaphylaxis and route of administration.

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General ...Orally, sodium is well tolerated when used in moderation at intakes up to the Chronic Disease Risk Reduction (CDRR) intake level. Topically, a thorough evaluation of safety outcomes has not been conducted.
Serious Adverse Effects (Rare):
Orally: Worsened cardiovascular disease, hypertension, kidney disease.

Cardiovascular ...Orally, intake of sodium above the CDRR intake level can exacerbate hypertension and hypertension-related cardiovascular disease (CVD) (26229,98176,100310,106263). A meta-analysis of observational research has found a linear association between increased sodium intake and increased hypertension risk (109398). Observational research has also found an association between increased sodium salt intake and increased risk of CVD, mortality, and cardiovascular mortality (98177,98178,98181,98183,98184,109395,109396,109399). However, the existing research is unable to confirm a causal relationship between sodium intake and increased cardiovascular morbidity and mortality; high-quality, prospective research is needed to clarify this relationship (100312). As there is no known benefit with increased salt intake that would outweigh the potential increased risk of CVD, advise patients to limit salt intake to no more than the CDRR intake level (100310).
A reduction in sodium intake can lower systolic blood pressure by a small amount in most individuals, and diastolic blood pressure in patients with hypertension (100310,100311,106261). However, post hoc analysis of a small crossover clinical study in White patients suggests that 24-hour blood pressure variability is not affected by high-salt intake compared with low-salt intake (112910). Additionally, the available research is insufficient to confirm that a further reduction in sodium intake below the CDRR intake level will lower the risk for chronic disease (100310,100311). A meta-analysis of clinical research shows that reducing sodium intake increases levels of total cholesterol and triglycerides, but not low-density lipoprotein (LDL) cholesterol, by a small amount (106261).
It is unclear whether there are safety concerns when sodium is consumed in amounts lower than the adequate intake (AI) levels. Some observational research has found that the lowest levels of sodium intake might be associated with increased risk of death and cardiovascular events (98181,98183). However, this finding has been criticized because some of the studies used inaccurate measures of sodium intake, such as the Kawasaki formula (98177,98178,101259). Some observational research has found that sodium intake based on a single 24-hour urinary measurement is inversely correlated with all-cause mortality (106260). The National Academies Consensus Study Report states that there is insufficient evidence from observational studies to conclude that there are harmful effects from low sodium intake (100310).

Endocrine ...Orally, a meta-analysis of observational research has found that higher sodium intake is associated with an average increase in body mass index (BMI) of 1. 24 kg/m2 and an approximate 5 cm increase in waist circumference (98182). It has been hypothesized that the increase in BMI is related to an increased thirst, resulting in an increased intake of sugary beverages and/or consumption of foods that are high in salt and also high in fat and energy (98182). One large observational study has found that the highest sodium intake is not associated with overweight or obesity when compared to the lowest intake in adolescents aged 12-19 years when intake of energy and sugar-sweetened beverages are considered (106265). However, in children aged 6-11 years, usual sodium intake is positively associated with increased weight and central obesity independently of the intake of energy and/or sugar-sweetened beverages (106265).

Gastrointestinal ...In one case report, severe gastritis and a deep antral ulcer occurred in a patient who consumed 16 grams of sodium chloride in one sitting (25759). Chronic use of high to moderately high amounts of sodium chloride has been associated with an increased risk of gastric cancer (29405).

Musculoskeletal ...Observational research has found that low sodium levels can increase the risk for osteoporosis. One study has found that low plasma sodium levels are associated with an increased risk for osteoporosis. Low levels, which are typically caused by certain disease states or chronic medications, are associated with a more than 2-fold increased odds for osteoporosis and bone fractures (101260).
Conversely, in healthy males on forced bed rest, a high intake of sodium chloride (7.7 mEq/kg daily) seems to exacerbate disuse-induced bone and muscle loss (25760,25761).

Oncologic ...Population research has found that high or moderately high intake of sodium chloride is associated with an increased risk of gastric cancer when compared with low sodium chloride intake (29405). Other population research in patients with gastric cancer has found that a high intake of sodium is associated with an approximate 65% increased risk of gastric cancer mortality when compared with a low intake. When zinc intake is taken into consideration, the increased risk of mortality only occurred in those with low zinc intake, but the risk was increased to approximately 2-fold in this sub-population (109400).

Pulmonary/Respiratory ...In patients with hypertension, population research has found that sodium excretion is modestly and positively associated with having moderate or severe obstructive sleep apnea. This association was not found in normotensive patients (106262).

Renal ...Increased sodium intake has been associated with impaired kidney function in healthy adults. This effect seems to be independent of blood pressure. Observational research has found that a high salt intake over approximately 5 years is associated with a 29% increased risk of developing impaired kidney function when compared with a lower salt intake. In this study, high salt intake was about 2-fold higher than low salt intake (101261).

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General ...Orally and topically, sunflower oil is well tolerated.
Serious Adverse Effects (Rare):
Orally: Allergic reactions in sensitive individuals have been reported.

Immunologic ...Orally, sunflower oil can cause an allergic reaction in individuals sensitive to the Asteraceae/Compositae family. Members of this family include ragweed, chrysanthemums, marigolds, daisies, and many other herbs. However, the protein content of sunflower oil is very low. In one case report, an allergic response to sunflower oil did not occur despite presenting with severe allergy and anaphylaxis to sunflower seed (108140).

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