Matrix 5.0 Assorted Flavors by Syntrax Innovations

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Athletic performance. Preliminary clinical research in recreationally active young men shows that taking hyperimmune egg (Immune26, Legacy for Life) orally in a dose of 4.5 grams daily for 2 days, then 9 grams daily for 2 days, then 13.5 grams daily for 6 days, reduces the maximum heart rate and increases peak power during three 5-minute submaximal exercise bouts on a treadmill when compared with placebo (102905). Poor study design limits the reliability of this research.
• Cystic fibrosis. Preliminary clinical research in cystic fibrosis patients aged 2-32 years who have had a prior infection with Pseudomonas aeruginosa shows that using a hyperimmune egg yolk extract containing 50 mg of IgY antibodies to two strains of P. aeruginosa as a gargle once daily at bedtime, and then swallowing the liquid, prolongs the time to the second infection when compared with patients who do not receive the gargle (102908). During follow-up of 36-92 months (mean 57 months), patients using the gargle had 2.5 positive sputum cultures for P. aeruginosa per 100 months of observation, compared with 13.7 per 100 months in the untreated control group. In the treated group, no patients became chronically colonized with the organism, compared with 24% of patients in the control group (102908). In further follow-up lasting up to 12 years, the treated patients were switched to an egg extract containing 50 mg of IgY antibodies against six strains of P. Aeruginosa, which was used as a gargle for 2 minutes once daily and swallowed. There were 2.3 positive sputum cultures per 100 months of observation, and 2 patients developed chronic colonization with P. aeruginosa. In the untreated control group, there were 7 positive sputum cultures per 100 months, and 7 patients became chronically colonized (102909). The reliability of this research is reduced by lack of randomization, since treated patients from Sweden were compared with untreated patients from Denmark. Additionally, some, but not all, of the evaluated patients were receiving chronic treatment with azithromycin.
• Helicobacter pylori. Preliminary clinical research shows that taking a specific defatted egg powder product prepared from eggs of hens immunized with Helicobacter pylori urease (Ovlagen, GHEN Corp., Japan), 900 mg three times daily after meals for 4 weeks, is associated with a reduction in urea breath test values, but not complete eradication of H. pylori, in asymptomatic volunteers with H. pylori-positive urea breath tests (102910). Other clinical research shows that taking a yogurt drink containing H. pylori urease-specific IgY 15 mg, Lactobacillus acidophilus, and Bifidobacterium species, 150 mL three times daily for 4 weeks, is associated with a 40% reduction in urea breath test values when compared with baseline in volunteers positive for H. pylori by urea breath test. Taking the same yogurt drink without IgY is associated with a 15% reduction in urea breath test values when compared with baseline (102911). The validity of this finding is limited by the lack of a direct comparison to the control group.
• Hyperlipidemia. Preliminary clinical research shows that taking a specific hyperimmune egg powder formulation (Immune26, Legacy for Life) for 26 weeks does not significantly lower cholesterol when compared with baseline (13213). The validity of this finding is limited by the lack of a comparator group.
• Osteoarthritis. Preliminary clinical research shows that some patients with osteoarthritis might have reduced subjective measures of joint pain or swelling after taking a specific hyperimmune egg powder formulation (Immune26, Legacy for Life) for 2 months when compared with baseline (13207). Poor study design limits the reliability of this research.
• Periodontitis. Preliminary clinical research shows that using lozenges containing hyperimmune egg yolk immunoglobulin (IgY) from hens immunized with Porphyromonas gingivalis proteinases (gingipains) reduces gingival bleeding index and oral P. gingivalis counts more than placebo in people with periodontitis. Two lozenges, each containing 12 mg powdered IgY, were dissolved in the mouth 3 times daily after meals for 8 weeks (102902).
• Rheumatoid arthritis (RA). Preliminary clinical research shows that taking a specific hyperimmune egg powder formulation (Immune26, Legacy for Life) for 2 months does not significantly improve subjective measures of RA symptoms when compared with baseline (13207). Poor study design limits the reliability of this research.
• Rotaviral diarrhea. Preliminary clinical research shows that taking a preparation of purified egg yolk immunoglobin (IgY) from hens immunized against strains of rotavirus, 10 grams daily in 4 divided doses for 4 days, can modestly decrease rotaviral diarrhea in children aged 2-24 months. The IgY preparation seems to significantly reduce stool output and oral rehydration solution intake on day 1 of treatment. But it does not seem to significantly reduce stool on subsequent days. Children treated with the IgY also seem to clear rotavirus from the stool more quickly when compared with children receiving placebo (13206). More evidence is needed to rate hyperimmune egg for these uses.

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POSSIBLY EFFECTIVE

• Athletic performance. Regular consumption of whey protein in conjunction with exercise may improve muscle strength and performance. However, inconsistent consumption of whey protein, as well as intake of whey protein without concomitant exercise, may not be beneficial. Details: Most clinical research shows that taking whey protein 1.2-1.5 grams/kg or 30-33 grams daily in combination with strength training for 6-21 weeks can increase lean body mass, strength, and muscle hypertrophy in healthy young adults (16728,16729,16748,46552,85765,85910,91806,96025,102173). Higher doses of whey protein, such as 46-77 grams daily, have also been shown to increase strength when combined with athletic training (98886,98888). Some clinical research shows that whey protein hydrolysate (Lacprodan HYDRO.365, Arla Food Ingridiens Group P/S) twice daily for 1 week may slightly improve running speed (91793). However, less frequent intake or lower doses of whey protein do not seem to be beneficial for muscle strength. Some clinical research in middle-aged males shows that taking whey protein 35 grams three times weekly with resistance training for 14 weeks does not improve strength or muscle mass when compared with placebo (46736,85893). A small clinical study in trained males shows that taking whey protein 25 grams daily has no effect on body mass or strength after 2 weeks of detraining and 4 weeks of retraining when compared with maltodextrin (96021). Also, consuming whey protein without concomitant exercise does not seem to improve body composition or strength. Some clinical research shows that whey protein does not improve muscle mass or strength in obese postmenopausal patients who are losing weight through diet without exercise (98889). Some research has compared whey protein to other types of protein. A meta-analysis of preliminary clinical research, as well as individual clinical studies, show that whey protein is similarly beneficial to soy, beef, chicken, and dairy (casein with whey) protein for improving muscle strength (85941,98871,98888,105591). However, the validity of these findings is limited by the small size and high heterogeneity of the studies.

POSSIBLY INEFFECTIVE

• Chronic obstructive pulmonary disease (COPD). Oral whey protein does not seem to improve COPD symptoms. Details: Clinical research in adults with COPD shows that taking a specific whey protein supplement (ImuPower) 12 grams twice daily for 6 weeks can improve shortness of breath, but not lung function, exercise tolerance, or quality of life, when compared with placebo (86302). Other clinical research shows that taking a pressurized whey protein supplement 20 grams daily for 16 weeks, in combination with strength training for weeks 8-16, does not improve exercise tolerance, lung function, or muscle function when compared with placebo (86025).
• Osteoporosis. Oral whey protein does not seem to improve bone mineral density in older adults. Details: Clinical research shows that taking whey protein 30-45 grams daily for up to 2 years does not improve bone density when compared with a low-protein placebo in postmenopausal patients and males over 70 years of age (86074,91796). Taking whey protein 20-60 grams daily for 36 weeks also does not improve bone density when compared with an isoenergetic placebo in overweight or obese adults undergoing an exercise program (96027). The effect of whey protein in patients with osteoporosis has not been evaluated.

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Age-related cognitive decline. It is unclear if oral whey protein is beneficial for age-related cognitive impairment. Details: Preliminary clinical research in older adults with subjective cognitive decline shows that taking whey peptide 1 gram for 12 weeks does not improve memory, executive functioning, or attention when compared with placebo. However, in a subgroup of patients with high levels of fatigue, whey peptide modestly improved memory (98885).
• Asthma. It is unclear if oral whey protein is beneficial in children with asthma. Details: A very small clinical study in children with asthma shows that taking a specific type of whey protein (HMS 90, Immunotec Inc.) 20 grams daily for 30 days does not improve lung function when compared to baseline (85833). The validity of this finding is limited by the lack of a comparator group.
• Atopic dermatitis (eczema). It is unclear if consuming infant formula containing whey protein reduces the risk of developing eczema. Details: A high-quality meta-analysis of small clinical studies shows that use of infant formula containing hydrolyzed whey protein for 4-6 months is no better than standard milk formula for reducing the risk of eczema (105585). This is in contrast to older meta-analyses that found benefit after consumption of fully or partially hydrolyzed whey protein (85987,86007,86048). However, these older publications had notable conflicts of interest and did not include small negative studies (105585). In 2011, the US Food and Drug Administration (FDA) allowed a qualified health claim in healthy infants with a family history of allergy who are not solely breastfed. It stated that feeding a formula of 100% partially hydrolyzed whey protein instead of formula containing intact cow's milk proteins from birth up to 4 months of age may reduce the risk of atopic dermatitis throughout 1-3 years of age. However, the FDA has concluded that there is very little scientific evidence to support this claim (102311).
• Atopic disease. It is unclear if consuming infant formula containing whey protein reduces the risk of developing atopic disease. Details: A high-quality meta-analysis of small clinical studies shows that use of infant formula containing hydrolyzed whey protein for 4-6 months is no different than standard milk formula for reducing the risk of atopic disease. However, there was a non-significant trend to reduced risk in the hydrolyzed whey protein group (105585). This finding conflicts with older meta-analyses which found benefit with hydrolyzed whey protein formula (85987,86007). However, these older publications had notable conflicts of interest and did not include small negative studies (105585).
• Cystic fibrosis. It is unclear if oral whey protein is beneficial for children or adults with cystic fibrosis. Details: A small clinical study in patients with cystic fibrosis shows that taking pressurized whey protein, 20 grams in children and 40 grams in adults, daily for 28 days, improves lung function in children, but not adults, when compared with baseline (85995). The validity of this finding is limited by the lack of a comparator group.
• Diabetes. It is unclear if oral whey protein is beneficial for improving glycemic control in people with type 2 diabetes. Details: A small clinical study in patients with well-controlled diabetes shows that consuming a 220 kcal drink containing whey protein concentrate 50 grams (Beit Haemek Advanced Technologies, Beit Haemek) before a meal lowers blood glucose levels by 28% and increases insulin levels in the first 3 hours after a meal when compared with drinking water (91795). However, whey protein does not seem to have long-term benefit on glycemic control when added to an exercise regimen. Another small clinical study in middle-aged males with type 2 diabetes shows that adding 20 grams of whey protein daily for 10 weeks to high-intensity mixed-mode interval training (MMIT) does not further improve glycemic control or body composition when compared to MMIT with placebo (98883).
• Exercise-induced asthma. It is unclear if oral whey protein is beneficial for exercise-induced asthma. Details: A small clinical study in patients with exercise-induced asthma shows that taking whey protein 30 grams daily for 10 days improves lung function when compared to baseline (85791). The validity of this finding is limited by the lack of a comparator group.
• Exercise-induced muscle damage. It is unclear if oral whey protein is beneficial for attenuating exercise-induced muscle damage; evidence is conflicting. Details: A meta-analysis of small heterogeneous clinical studies in trained and untrained adults shows that supplementation with a median dose of whey protein 25 grams (range 20-120 grams) given after and/or before exercise modestly improves muscle recovery measured over 3 days when compared with control (98881). Individual studies included in the analysis used whey protein 1.5 grams/kg daily for up to 2 weeks (86044), and whey protein isolate or whey protein hydrolysate (NatraPro or NatraBoost XR, MG Nutritionals) 25 grams three times in 24 hours (85915). Other small studies have not found benefit, but it is unclear if they were adequately powered. One small clinical study in healthy untrained males shows that taking whey protein 36.6 grams daily, starting 7 days before and continuing until 4 days after arm exercise, does not prevent muscle soreness over 5 days or attenuate reductions in strength (96024). Another small study in untrained healthy males shows that taking whey protein isolate (biPro, Eden Prairie) 0.3 grams/kg three times daily for 5 days does not reduce self-reported delayed onset muscle soreness, but may reduce creatine kinase, a biomarker of muscle damage, when compared with water (104758). Whey protein may not be beneficial for recovery from exercise in trained athletes. Small clinical studies show that consuming a whey protein beverage before or after exercise does not improve muscle recovery for trained adult and adolescent athletes when compared with a carbohydrate or non-caloric control (86303,91799,105592).
• Hepatitis. It is unclear if oral whey protein is beneficial for hepatitis. Details: A small clinical study in patients with chronic hepatitis B shows that taking a specific type of whey protein (Immunocal) 12 grams twice daily for 12 weeks can reduce liver transaminase levels and can increase glutathione (GSH) levels when compared with baseline. However, whey protein supplementation does not seem to improve liver function in patients with chronic hepatitis C (85687). The validity of these findings is limited by the lack of a comparator group.
• HIV/AIDS. It is unclear if oral whey protein is beneficial for improving immune function in children with HIV/AIDS. Details: One small clinical study in children with rapidly progressive HIV infection shows that taking whey protein at levels corresponding to 20% to 50% of total required protein for 4 months does not affect CD4 or CD8 cell count or the ratio of CD4+/CD8+ when compared with baseline. However, the occurrence of acute co-infections might be reduced with whey protein supplementation when compared with control (85781).
• HIV/AIDS-related wasting. Although oral whey is an adequate source of protein, it is unclear if it is better than other protein sources for reducing HIV/AIDs-related wasting. Details: A small open-label clinical study in malnourished patients with HIV shows that taking whey protein (dose unspecified) daily for 14 weeks increases muscle and fat mass when compared with baseline (85693). The validity of these findings is limited by the lack of a comparator group. Another small study in patients with HIV, stable weight, and a history of unintentional weight loss shows that taking whey protein 40 grams daily for 12 weeks does not affect weight or muscle mass when compared with taking an isocaloric control (85921). These study findings are limited because they cannot be generalized to patients with active weight loss or wasting. Another limitation is the higher dropout rate in the whey protein group due to gastrointestinal adverse events.
• Hyperlipidemia. It is unclear if oral whey protein is beneficial for lowering cholesterol levels. Details: A very small clinical study in overweight males with hyperlipidemia shows that taking whey protein 26.6 grams daily while participating in a resistance training program for 12 weeks reduces total cholesterol levels when compared with baseline but not when compared with placebo (85941). A meta-analysis of small heterogeneous clinical studies in healthy adults, as well as those with obesity and/or mild hypertension, shows that consuming whey protein alone or with other interventions seems to reduce lipid levels when compared with control (105586). However, most included studies were in patients without hyperlipidemia; it is unclear if whey protein is beneficial in patients with hyperlipidemia. Furthermore, these findings are limited by the variability in whey protein dosing, study duration, and patient population.
• Hypertension. It is unclear if oral whey protein reduces blood pressure. Details: Preliminary clinical research shows that drinking a beverage containing whey protein 2.6 grams daily for 12 weeks does not lower blood pressure in patients with mild hypertension when compared with placebo (85835). Also, taking whey protein 28 grams twice daily in water for 8 weeks reduces 24-hour systolic and diastolic blood pressure by 2.9 mm Hg and 2 mmHg, respectively, when compared with maltodextrin or casein in adults with mild hypertension and prehypertension. There were also improvements in endothelial function (96019).
• Mitochondrial myopathies. It is unclear if oral whey protein improves symptoms in patients with mitochondrial myopathies. Details: A small clinical study in individuals with mitochondrial diseases shows that taking a whey protein supplement 10 grams daily for one month does not improve muscle strength or quality of life when compared with placebo (85984).
• Nonalcoholic steatohepatitis (NASH). It is unclear if oral whey protein improves NASH. Details: A small clinical study in patients with untreated NASH shows that taking whey protein 20 grams daily for 12 weeks can reduce liver function tests, including alanine aminotransferase (ALT) and aspartate aminotransferase (AST), and reduce hepatic macrovesicular steatosis when compared with baseline (85961). The validity of these findings is limited by the lack of a comparator group.
• Obesity. It is unclear if oral whey protein is beneficial for weight loss when used without dietary modifications. Adding whey protein to a calorie-restricted diet or an exercise regimen does not seem to improve weight loss. Details: Most research in overweight and obese individuals shows that taking whey protein along with a low-calorie diet and/or in addition to an exercise program does not further increase weight loss when compared with the low-calorie diet or exercise alone (85897,86069,86130,91794,91798,91802,96027,102172). However, a small clinical study in patients who have regained weight after bariatric surgery shows that following a low-calorie diet and taking whey protein 0.5 grams/kg daily for 16 weeks reduces body weight by about 2 kg and fat mass by about 3 kg when compared with following a low-calorie diet alone (96022). When whey protein is taken without diet modifications, studies have yielded conflicting results. One small clinical study in overweight and obese adults shows that taking whey protein isolate 27 grams twice daily for 12 weeks does not reduce body weight when compared with a glucose control (86011). However, another small clinical study in overweight and obese adults shows that taking whey protein concentrate 52 grams daily for 23 weeks reduces weight by 1.8 kg and fat by 2.4 kg when compared with a carbohydrate control, but is no better than taking soy protein isolate 52 grams (86077). In contrast, a small clinical study in overweight males shows that taking whey protein concentrate 65 grams before lunch daily for 12 weeks decreases calorie intake and reduces weight by about 1 kg when compared with taking soy protein isolate 60 grams (91801). In contrast to adults, supplementation with whey protein might increase weight in adolescents. A clinical study in overweight adolescents shows that consuming 1 liter of a milk-based whey protein drink daily for 12 weeks increases weight and body mass index when compared with a water control (86144).
• Parkinson disease. It is unclear if oral whey protein improves symptoms of Parkinson disease. Details: Clinical research in a small group of patients shows that taking a specific type of whey protein isolate (HMS 90/Immunocal) 10 grams twice daily for 6 months does not improve symptoms of Parkinson disease when compared with placebo (96026). However, this study may have been inadequately powered to detect a difference between groups.
• Polycystic ovary syndrome (PCOS). It is unclear if oral whey protein improves symptoms and metabolic effects of PCOS. Details: One small clinical study in patients with PCOS shows that taking 240 kcal as a nutritional supplement containing pure whey protein 96% daily, in addition to a calorie-restricted diet for 2 months, reduces body weight, fat mass, and cholesterol and apolipoprotein B levels when compared with a simple sugar control supplement. However, the whey protein supplement does not improve glucose or insulin levels, and seems to decrease high-density lipoprotein (HDL) cholesterol levels (85912). The validity of this study is limited by its small size and a significant dropout rate.
• Polymyalgia rheumatica. It is unclear if oral whey protein improves muscle function in patients with polymyalgia rheumatica. Details: A small clinical study in patients with polymyalgia rheumatica shows that taking a whey protein-enriched dairy product twice daily for 8 weeks does not improve lower limb muscle function, walking speed, chair stand test performance, peak jump power, or peak jump force when compared with a regular dairy product (Play, Valio Ltd.) (86075).
• Psoriasis. It is unclear if oral whey protein improves psoriasis. Details: A small clinical study in patients with stable psoriasis shows that taking a specific whey protein extract product (Dermylex, Advitech, Inc.) 5 grams daily for 8 weeks modestly decreases symptom severity when compared with placebo (85885).
• Sarcopenia. Research on the use of oral whey protein in older adults with sarcopenia is conflicting. Details: Small clinical studies in trained older females show that consuming whey protein 35 grams three times weekly for 12 weeks, either before or after resistance training, modestly increases skeletal muscle mass, strength, and functional capacity when compared with resistance training and insufficient protein intake (98887,98890). Research on the use of whey supplementation without exercise is conflicting. A small clinical study in older adults with low muscle mass living in China shows that taking whey, or a whey-soy protein blend, 16 grams daily for 6 months slightly attenuates muscle loss when compared with no intervention (105603). However, a clinical study in healthy, active older adults living in Denmark shows that taking whey protein hydrolysate 20 grams twice daily does not increase muscle size or strength when compared with a carbohydrate control (105593). This finding may not be generalizable to frail adults or those with existing sarcopenia. Whey protein with or without exercise has shown benefit when used in combination with other nutrients. Specifically, whey protein 60 grams has been used with creatine 5 grams, calcium 800 mg, vitamin D 1000 IU, and omega-3 fatty acids 3 grams (Infinit Nutrition) for 6 weeks (96016). A beverage with leucine-enriched whey protein 20 grams has been used in combination with vitamin D 800 IU (Nutricia Advanced Medical Nutrition) daily for 6 weeks (96017). Another beverage containing whey protein 20 grams and vitamin D 800 IU has been used daily for 6 months (98882).
• Sepsis. It is unclear if oral whey protein is beneficial in children with sepsis. Details: A very small clinical study in long-term intensive care pediatric patients shows that taking a specific whey protein supplement (Beneprotein) 0.3 grams/kg daily for up to 28 days has a similar effect on the time to onset and the rate of hospital-acquired infection or sepsis when compared with taking a combination of zinc, selenium, glutamine, and metoclopramide. It is not clear how these results compare to patients receiving no supplementation (86095). More evidence is needed to rate whey protein for these uses.

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POSSIBLY SAFE ...when used orally and appropriately. A specific commercial hyperimmune egg product (Immune26, Legacy for Life) has been used with apparent safety in studies lasting up to 26 weeks (13207,13213). A hyperimmune egg product containing antibodies against Helicobacter pylori has been used with apparent safety for 4 weeks (102910,102911). A hyperimmune egg product containing antibodies against Pseudomonas aeruginosa has been used with apparent safety in a limited number of adult patients with cystic fibrosis for up to 12 years (102908,102909).

CHILDREN: POSSIBLY SAFE
when used orally and appropriately. A hyperimmune egg extract containing antibodies against rotavirus has been used with apparent safety in children aged 2-24 months for 4 days (13206). A hyperimmune egg product containing antibodies against Pseudomonas aeruginosa has been used with apparent safety in children aged 1-18 years with cystic fibrosis for up to 12 years (102908,102909).

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

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LIKELY SAFE ...when used orally and appropriately. Whey protein up to 30 grams has been safely used in clinical trials for up to 6 months (4930,16728,16729,105587).

CHILDREN: LIKELY SAFE
when used orally and appropriately as a dietary protein in food or infant formula. Hydrolyzed whey protein-based formula has been safely used in infants for up to 6 months in clinical trials (4927,105585,105594).

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

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BISPHOSPHONATES Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, whey protein might reduce the absorption of bisphosphonates.  Details Whey protein contains minerals such as calcium that bind bisphosphonates in the gut (9,12937). Advise patients to take bisphosphonates at least 30 minutes before whey protein, but preferably at a different time of day.

LEVODOPA Interaction Rating = Major Do not take this combination. Severity = High •  Occurrence = Probable •  Level of Evidence = D Theoretically, whey protein might decrease levodopa absorption.  Details Small clinical studies show that concomitant ingestion of protein or high doses of leucine or isoleucine (100 mg/kg) and levodopa can exacerbate tremor, rigidity, and the "on-off" syndrome in patients with Parkinson disease (3291,3292,3293,3294,4944).

QUINOLONE ANTIBIOTICS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, whey protein might decrease quinolone absorption.  Details Whey protein contains minerals, such as calcium, that can bind to quinolones in the gut (9,10339). To avoid this interaction, advise patients to take oral quinolones at least 2 hours before or 4-6 hours after whey protein.

TETRACYCLINE ANTIBIOTICS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Probable •  Level of Evidence = D Theoretically, whey protein might decrease tetracycline absorption.  Details Whey protein contains minerals, such as calcium, that bind to tetracyclines in the gut (9,1843). To avoid this interaction, advise patients to take oral tetracyclines at least 2 hours before or 4-6 hours after whey protein.

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General ...Orally, hyperimmune egg seems to be well tolerated when used short-term. Side effects reported in clinical trials include gastrointestinal effects and skin rash (13213,102904).

Dermatologic ...Orally, skin rash has been reported in one clinical trial, but did not require treatment (102904).

Gastrointestinal ...Orally, hyperimmune egg products have been reported to cause diarrhea, gas, stomach ache, and bloating (13213,102904).

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General ...Orally, whey protein is generally well tolerated.
Most Common Adverse Effects:
Orally: Acne, bloating, cramps, diarrhea, fatigue, headache, nausea, reflux, reduced appetite, and thirst. Most adverse effects are dose-related.

Cardiovascular ...In one case report, use of an unclear quantity of whey protein over one month was thought to be probably responsible for the development of coronary embolism in three coronary arteries in a 33-year-old male with no history of atherosclerosis risk factors. The patient required treatment with intravenous glycoprotein IIb/IIIa inhibitor and heparin (96023).

Dermatologic ...Orally, whey protein has been reported to trigger the onset or worsening of acne. Multiple case reports in teenagers and young adults have associated intake of whey protein with the development of acne or the worsening of existing acneiform lesions. In these reports, the discontinuation of whey protein was typically associated with the clearance of acne lesions. In some cases, patients who were unresponsive to acne treatments while using whey protein became responsive after whey protein discontinuation (103965,103970,103971). Cow's milk, which is comprised of 20% whey protein, is also thought to exacerbate acne. It is theorized that this effect may be due to the growth factor and alpha-lactalbumin content of whey protein (103971,103982).

Gastrointestinal ...Orally, whey protein, especially in higher doses of 2. 3-6.5 grams/kg daily, may cause increased bowel movements, nausea, thirst, bloating, esophageal reflux, cramps, and reduced appetite (2640,85961,85702,86043,86074,86075,86084,86089,86095).

Hepatic ...In two case reports, acute cholestatic liver injury occurred after consumption of the combination of whey protein and creatine supplements (46701,90319).

Musculoskeletal ...In one case report, a 26-year-old male experienced fasciitis, or swelling of the forearms, hands, and legs, after consuming the supplement Pure Whey (85895).

Neurologic/CNS ...Orally, high doses of whey protein may cause tiredness or fatigue and headache (2640). Mild drowsiness has also been reported (86089,86092,86124).

(Read more about WHEY PROTEIN)