BiotaGen Prebiotic Powder by Klaire Laboratories

LIKELY EFFECTIVE

• Coronary heart disease (CHD). Consuming products containing at least 3.6 grams of soluble fiber, including beta-glucans, per day may reduce the risk of CHD when consumed as part of a diet low in saturated fat and cholesterol. Details: Clinical research shows that a diet containing foods high in beta-glucans, such as oats and barley, reduces the risk of heart disease (2737,4960,4962,4963,4964,4965,4966,4967,4968). In 1993, the FDA approved a health claim stating that consuming products containing at least 3 grams of beta-glucans per day, as part of a diet low in saturated fat and cholesterol, may reduce the risk of CHD (102336). However, clinical studies show that at least 3.6 grams of soluble fiber daily is needed to reduce the risk of CHD (5786,5787,5788,5794,5795,5796).
• Dyslipidemia. Oral beta-glucans modestly reduces low-density lipoprotein (LDL) cholesterol levels. Details: Although some research disagrees, most clinical research shows that taking barley- or oat-derived beta-glucans 3-10 grams daily for up to 12 weeks or yeast-derived beta-glucans 7.5 grams twice daily for 7-8 weeks can reduce LDL and total cholesterol levels when used for up to 12 weeks (5790,5796,7272,17129,34700,34727,34729,34765,34766,34811)(34812,34876). Meta-analyses of available clinical research on oat-derived beta-glucans show that taking at least 3 grams daily reduces LDL cholesterol by around 4-10 mg/dL and total cholesterol by 4-12 mg/dL but does not affect high-density lipoprotein (HDL) cholesterol or triglyceride levels when compared with control diets (92660,97987,112225). Consuming oat-derived beta-glucans also reduces apolipoprotein B (apoB) levels by 0.54 mg/dL when compared with control diets (97987). The effects of oat-derived beta-glucans on cholesterol levels appear to be greater in patients with diabetes and those with higher LDL cholesterol levels (92660,97987). A meta-analysis of available clinical research on barley-derived beta-glucans shows that consuming an average of 6.5-7 grams of beta-glucans daily as part of the diet reduces LDL cholesterol levels by 4.5 mg/dL, total cholesterol levels by 5.6 mg/dL, and apoB levels by 0.54 mg/dL when compared with control diets (98204). The form of beta-glucans used may alter the effect of beta-glucans on cholesterol levels. Some research shows that barley that is highly enriched (75% by weight) with beta-glucans does not significantly affect cholesterol levels. This lack of effect seems to be the result of processing the barley into a highly enriched beta-glucans product (10166). Other clinical research also shows that the processing of beta-glucans products or the food matrix used to make these products might reduce beta-glucans molecular weight and/or solubility and therefore decrease its ability to lower cholesterol levels (10145,34800,34819).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Aging. Although there is interest in using oral or topical beta-glucans for aging, there is insufficient reliable information about the clinical effects of beta-glucans for this purpose.
• Allergic rhinitis (hay fever). It is unclear if oral beta-glucans are beneficial for reducing symptoms of allergic rhinitis. Details: A small clinical trial in patients allergic to ragweed shows that taking specific yeast-derived beta-glucans (Wellmune WGP) 250 mg daily for 4 weeks decreases the number of allergy symptoms by 28% and the severity of allergy symptoms by 52% when compared with placebo (34859).
• Atopic dermatitis (eczema). It is unclear if topical beta-glucans are beneficial for atopic dermatitis. Details: Preliminary clinical research in children and adults with atopic dermatitis shows that applying a specific cream (Imunoglukan P4H, PLEURAN s.r.o.) containing beta-glucans 0.25% 2-3 times daily for 6 months modestly reduces pruritus, intensity of flares, and overall disease severity when compared with the application of a standard emollient (98201).
• Benign prostatic hyperplasia (BPH). Although there is interest in using oral beta-glucans for BPH, there is insufficient reliable information about the clinical effects of beta-glucans for this purpose.
• Cancer. Although there is interest in using oral beta-glucans for cancer, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Canker sores. It is unclear if oral beta-glucans are beneficial for canker sores. Details: Preliminary clinical research shows that taking beta-glucans 10 mg twice daily for 20 days reduces ulcer severity in patients with recurrent aphthous stomatitis when compared with placebo (34763).
• Chronic fatigue syndrome (CFS). Although there is interest in using oral beta-glucans for CFS, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Critical illness (trauma). It is unclear if oral beta-glucans are beneficial for patients with critical illness. Details: Preliminary clinical research shows that taking oat-derived beta-glucans 3 grams daily as part of enteral feeds does not reduce the length of hospital stay, mortality rate, or infection rate when compared with placebo in patients with trauma. However, the length of time on mechanical ventilation was approximately 47% shorter when compared with placebo (100186).
• Diabetes. Small clinical studies in children and adults with type 1 diabetes suggest that beta-glucans do not improve blood glucose levels. It is unclear if oral beta-glucans are beneficial for patients with type 2 diabetes. Details: Some preliminary clinical research in adults with type 2 diabetes shows that consuming oat-derived beta-glucans 3 grams daily in bread for 3 weeks improves insulin resistance and cholesterol levels when compared with control bread (34765). Other preliminary clinical research in patients with type 2 diabetes shows that consuming bread containing oat-derived beta-glucans in a ratio of 7.6 grams per 100 grams of starch daily for 6 months reduces postprandial glucose levels and glycated hemoglobin (HbA1c) when compared with control bread (97986). Additionally, some clinical research shows that replacing a half serving of white rice with beta-glucans-containing barley attenuates increases in postprandial glucose and insulin levels when compared with a full serving of white rice in patients with type 2 diabetes (103887). However, oat-derived beta-glucans 3-3.5 grams daily in bread or soup for 3-8 weeks does not seem to significantly affect fasting plasma glucose levels or HbA1c when compared with control bread or soup (34765,34788). Also, some evidence shows that consuming soup enriched with beta-glucans does not improve cholesterol levels in patients with type 2 diabetes when compared with control soup (34788). The inconsistency in clinical outcomes may be due to differences in the length of treatment, quantity or ratio of beta-glucans consumed, and/or the preparation of the beta-glucans product. In children with type 1 diabetes, consuming a bedtime snack enriched in beta-glucans appears to prevent hypoglycemia prior to midnight, but does not prevent hypoglycemia at later time points when compared with a control snack (34685). In adolescents with type 1 diabetes, a very small clinical study shows that taking a specific oat product (Betaglucare), providing 6 grams beta-glucans, in three divided doses daily for one week is beneficial for glycemic control and variability when compared with a standard diet without beta-glucans or with 3 grams beta-glucans daily. Maximal, mean, and pre- and post-meal blood glucose levels were modestly lower, and minimal blood glucose levels were modestly higher. Most measures of glycemic variability were statistically different, although there were no differences in the durations of hypoglycemia or hyperglycemia between groups (105261). However, a small crossover study in adults with type 1 diabetes shows that taking a specific product (Stomacol, Brainbridge Commerce AB) containing beta-glucans 1.53 grams 3 times daily prior to meals for 2 weeks does not alter blood glucose levels when compared with placebo (97983).
• Exercise-induced respiratory infections. There is conflicting evidence about the effects of beta-glucans on respiratory infections in athletes following competitive events. Details: Taking a specific product containing oat beta-glucans (OatVantage) 5.6 grams daily for 14 days does not reduce the number of sick days or the number of upper respiratory tract infections in trained male cyclists when compared with placebo (34746). However, other clinical research shows that taking yeast-derived beta-glucans 250-500 mg daily for 4 weeks beginning on the day after a marathon reduces the occurrence of symptomatic upper respiratory infections by 33% to 50% within 2-4 weeks of treatment when compared with placebo. Health scores, fatigue, and mood also improved (34860,92659). Additional clinical research in marathon runners shows that drinking a beverage containing yeast-derived beta-glucans 250 mg daily for 45 days prior to, the day of, and 45 days after a marathon does not reduce the duration or number of upper respiratory infections, but does seem to reduce the number of symptomatic days and overall severity of upper respiratory symptoms, when compared with placebo (103886). Finally, clinical research in top athletes also shows that taking a specific product containing mushroom-derived beta-glucans (Imunoglukan P4H, PLEURAN s.r.o.) 200 mg with vitamin C 200 mg daily for 3 months reduces the number of subjects with at least four symptoms of upper respiratory tract infection by approximately 85% when compared with vitamin C alone (34809).
• Fibromyalgia. Although there is interest in using oral beta-glucans for fibromyalgia, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Hepatitis. Although there is interest in using oral beta-glucans for hepatitis, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Hypertension. It is unclear if oral beta-glucans are beneficial for hypertension; the available evidence is conflicting. Details: Preliminary clinical research shows that consuming an oat cereal containing beta-glucans 5.52 grams daily for 6 weeks reduces diastolic and systolic blood pressure when compared with a low-fiber cereal in hypertensive adults (34691). However, other clinical research shows that consuming oat-based cereals enriched in beta-glucans for 12 weeks does not reduce blood pressure in individuals with hypertension. A reduction in blood pressure occurred in a sub-group of these individuals with a body mass index greater than 31.5 kg/m2 (34684,34722).
• Inflammatory bowel disease (IBD). Oral beta-glucans have only been evaluated in combination with other ingredients; their effect when used alone is unclear. Details: Preliminary clinical research in adults with IBD and symptoms of irritable bowel syndrome shows that taking a combination of beta-glucans, inositol, and digestive enzymes daily for 4 weeks, in conjunction with mesalamine, reduces evacuative urgency when compared with mesalamine alone. Taking this combination product also reduces abdominal pain, bloating, and gas when compared with baseline, but not when compared with taking mesalamine alone (97984).
• Irritable bowel syndrome (IBS). Oral beta-glucans have only been evaluated in combination with other ingredients; their effect when used alone is unclear. Details: Preliminary clinical research shows that taking one pill twice daily of a specific combination product (Biointol, BioActivaL) containing beta-glucans, inositol, and digestive enzymes for 4 weeks reduces pain, bloating, and gas, but not other symptoms of IBS, when compared with no treatment (34818). It is not clear if these effects are due to beta-glucans, the other ingredients, or the combination.
• Laser skin resurfacing. It is unclear if topical beta-glucans are beneficial for improving recovery from laser skin resurfacing. Details: In patients that had received fractional laser therapy for atrophic acne scars, preliminary clinical research shows that topical application of skin care products containing beta-glucans, including dressings, solutions, and creams, (Dermdoc, Songyang Biotechnology Co. Ltd) once daily to one side of the face for 14 days modestly increases hydration and reduces redness when compared with the other side of the face treated with the vehicle alone (105263).
• Lower respiratory tract infections. Oral beta-glucans have only been evaluated in combination with other ingredients; their effect when used alone is unclear. Details: Preliminary clinical research in children aged 2-6 years with recurrent respiratory tract infections shows that taking a specific combination product (Stimunex gocce) containing beta-glucans, elderberry extract, zinc, and vitamin D3 does not reduce the number or duration of lower respiratory tract infections when compared with no treatment. In the four months after treatment completion, the number of infections was reduced by about 50%; however, the total number of infections in each group was small. The dose was 1 drop/kg daily for one month, followed by 1 drop/kg daily for 15 consecutive days each month for the next three months (109212).
• Lyme disease. Although there is interest in using oral beta-glucans for Lyme disease, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Metabolic syndrome. It is unclear if oral beta-glucans are beneficial for metabolic syndrome. Details: Preliminary clinical research in adults with metabolic syndrome or at high risk for metabolic syndrome shows that eating 200 grams of bread enriched with 6% barley-derived beta-glucans daily for 4 weeks as part of the diet does not alter most metabolic parameters when compared with baseline. However, there was a small reduction in total cholesterol (100185). The validity of this finding is limited by the lack of a comparator group.
• Multiple sclerosis (MS). Although there is interest in using oral beta-glucans for MS, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Neuroblastoma. It is unclear if oral beta-glucans is beneficial in children or young adults with neuroblastoma. Details: Clinical research in children and young adults with relapsed or refractory high-risk neuroblastoma shows that taking yeast-derived beta-glucans for 17 days, starting four days before treatment with intravenous anti-GD2 murine monoclonal antibody for a total of 10 days, results in progression-free and overall survival rates of 28% and 61%, respectively, after 2 years, and 19% and 36%, respectively, after 5 years. Doses of beta-glucans ranged from 10-200 mg/kg daily and each patient completed 1-4 treatment cycles (109203). The validity of these findings is limited by the lack of statistical comparison to a control group. A large clinical study in children and young adults with high-risk neuroblastoma receiving subcutaneous GD2/GD3 vaccine shows that taking beta-glucans 40 mg/kg/day for 14 days as a primer to the vaccine improves the IgG antibody response at 32 weeks when compared with controls who started taking beta-glucans 6 weeks after vaccination. However, taking beta-glucans prior to vaccination does not improve overall or progression-free survival at approximately 20 months (112227). This study may have been inadequately powered to detect a difference in survival between groups.
• Obesity. It is unclear if oral beta-glucans are beneficial for obesity. Details: A meta-analysis of 20 randomized controlled trials shows that taking beta-glucans reduces body weight by about 0.8 kg and body mass index (BMI) by about 0.6 kg/m2 when compared with not taking beta-glucans. However, there was no effect on waist circumference. Also, populations included in this meta-analysis included those with obesity, as well as healthy individuals and patients with diabetes or hypercholesterolemia (100183). Results from individual clinical trials are mixed, with some showing modest reductions in body weight, BMI, and/or waist circumference, and others showing no effect (34790,98202,98203,100183,109208). This research has evaluated barley-, oat-, or yeast-derived beta-glucans at doses between 0.88-9 grams daily for 0.4-12 weeks (34790,98202,98203,100183,109208). Also, a capsule containing yeast-derived beta-glucans 477 mg has been taken daily for 2 weeks, then twice daily for 4 weeks (98203). Beta-glucans have also been taken in combination with other ingredients. For example, barley-derived beta-glucans 2.2 grams has been mixed with rice and consumed twice daily with meals for 12 weeks (98202) and oat-derived beta-glucans (B-Can, Garuda International, Inc.) 2.5 grams has been taken with green coffee polyphenols 300 mg twice daily for 8 weeks (109208). The inconsistency in clinical outcomes may be due to the heterogenous patient populations, as well as the differing sources, doses, and dosage forms of beta-glucans used.
• Otitis media. Although there is interest in using oral beta-glucans for otitis media, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Postoperative pain. It is unclear if oral beta-glucans are beneficial for reducing abdominal pain after surgery for intestinal polyps. Details: Preliminary clinical research in patients who underwent surgical removal of intestinal polyps shows that eating bread containing barley beta-glucans 3 grams daily for 3 months reduces bloating and abdominal pain when compared with eating bread that does not contain beta-glucans (34813).
• Respiratory tract infections. Oral beta-glucans have only been evaluated in combination with other ingredients; their effect when used alone is unclear. Details: Preliminary clinical research in children aged 2-6 years with recurrent respiratory tract infections shows that taking a specific combination product (Stimunex gocce) containing beta-glucans, elderberry extract, zinc, and vitamin D3 reduces the duration of respiratory tract infections by about 1.7 days and modestly improves parent-perceived symptom severity and effectiveness when compared with no treatment. However, there was no effect on the number of total, upper, or lower respiratory tract infections, the use of antibiotics or antipyretics, or the number of days missed from school. The product was dosed as 1 drop/kg daily for one month, followed by 1 drop/kg daily for 15 consecutive days each month for the next three months (109212).
• Rheumatoid arthritis (RA). Although there is interest in using oral beta-glucans for RA, there is insufficient reliable information about the clinical effects of beta-glucans for this condition.
• Stretch marks (striae gravidarum). It is unclear if topical beta-glucans are beneficial for stretch marks. Details: Preliminary clinical research shows that a specific topical serum and emulsion (Awake; Hangzhou Songyang Biotechnical) containing beta-glucans, applied twice daily for 12 weeks, modestly improves patient-scored, but not physician-scored, stretch mark appearance when compared with a vehicle control. When beta-glucans are used in combination with 1565-nm non-ablative fractional laser once every 4 weeks for 12 weeks, scar atrophy is modestly improved when compared with either treatment alone (109210). However, it is unclear if any changes would be considered clinically significant.
• Upper respiratory tract infection (URTI). It is unclear if oral beta-glucans are beneficial for the prevention of URTIs in adults or children. Details: A meta-analysis of clinical research shows that taking yeast-derived beta-glucans reduces the odds of developing a URTI in generally healthy individuals by approximately 65% when compared with placebo. There was also a small to medium effect on the overall incidence and duration of URTIs. Doses ranged from 35-900 mg daily for 4-26 weeks (105264). However, the results from this analysis were heterogeneous and the number of studies included was small. One study included in the analysis used a specific product containing yeast-derived beta-glucans (Wellmune WGP) 500 mg daily for 12 weeks and found no effect on the number or duration of overall symptomatic infections or the number or duration of specific types of respiratory infections when compared with placebo. However, there was an improvement in quality of life and a reduction in the number of missed work days (34879). Beta-glucans have also been evaluated for the prevention of URTI in children. A small clinical study in children aged 2-6 years with recurrent respiratory tract infections shows that taking a specific combination product (Stimunex gocce) containing beta-glucans, elderberry extract, zinc, and vitamin D3 does not reduce the number or duration of upper respiratory tract infections when compared with no treatment. At four months after treatment completion, the number of infections was reduced by about 44%; however, the total number of infections in both groups was small. The product was dosed as 1 drop/kg daily for one month, followed by 1 drop/kg daily for 15 consecutive days each month for the next three months (109212).
• Wound healing. Although there is interest in using topical beta-glucans for healing of wounds, burns, skin ulcers, and dermatitis, there is insufficient reliable information about the clinical effects of beta-glucans for these purposes. More evidence is needed to rate beta-glucans for these uses.

(Read more about BETA-GLUCANS)

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Constipation. Small clinical studies suggest that oral FOS may modestly improve symptoms in patients with constipation when used in combination with probiotics. The benefits of FOS when used alone are unclear. Details: Most clinical research has evaluated the use of FOS for constipation in conjunction with probiotics. Preliminary clinical research in adults with chronic functional constipation shows that taking an unspecified dose of a specific product (Hexbio) consisting of FOS, Lactobacillus acidophilus, Lacticaseibacillus casei, Lactococcus lactis, Bifidobacterium bifidum, Bifidobacterium longum, and Bifidobacterium infantis orally twice daily for 7 days increases defecation frequency by 3-fold when compared with placebo. Taking this product also improved patient reported symptoms of straining, lumpy hard stools, and incomplete evacuation sensations (90266). Other clinical research in adult females with constipation shows that taking a different product (Lactofos, SKL Functional Nutrition Ltda.) containing FOS 6 grams and Lacticaseibacillus paracasei, Lacticaseibacillus rhamnosus, Lactobacillus acidophilus, and Bifidobacterium lactis 0.1-1 billion colony-forming units each, orally twice daily for 30 days, modestly increases the frequency of evacuation and decreases constipation severity when compared with placebo (90300). It is unclear if these effects are due to FOS, other ingredients, or the combination. In children aged 4-8 years with functional constipation, preliminary clinical research shows that taking a mixture of FOS 0.45 grams and polydextrose 4.17 grams orally daily for 45 days improves the weekly frequency of bowel movements, clinical manifestations of constipation, and quality of stool type when compared with baseline (106482). It is unclear if these effects are due to FOS, polydextrose, or the combination. Additionally, the validity of these findings is limited by the lack of a comparator group. Clinical research evaluating the use of FOS alone is limited. Preliminary clinical research in elderly males shows that taking FOS alone 3-10 grams daily for 30 days increases the frequency of defecation by 1.5-fold when compared with baseline (8505). The validity of this study is limited by the lack of a comparator group. In non-breastfeeding infants 6-24 months of age with constipation, preliminary clinical research shows that fortifying formula or milk with FOS daily for 4 weeks increases the frequency of soft stools by 33% and decreases the frequency of straining by 55% when compared with placebo. However, the use of FOS did not increase the percentage of infants who achieved normal bowel pattern. The daily dose of FOS was 6 grams for infants 6-8.9 kg, 9 grams for infants 9-11.9 kg, and 12 grams for infants over 12 kg (98651).
• Diabetes. Oral FOS has only been evaluated in combination with probiotics; its effect when used alone is unclear. Details: Preliminary clinical research in adults with type 2 diabetes shows that taking a combination product containing FOS 500 mg, Bacillus coagulans 100 billion spores, Lacticaseibacillus rhamnosus 10 billion colony-forming units (CFUs), and Lactobacillus acidophilus 1 billion CFUs once daily for 12 weeks reduces fasting blood glucose by 17 mg/dL, compared with an increase of 3 mg/dL with placebo. However, taking this product did not affect body weight, waist circumference, or cholesterol levels. It is unclear if this effect is due to FOS, other ingredients, or the combination (107731).
• Hematopoietic stem cell transplant (HSCT). It is unclear if oral FOS is beneficial in patients undergoing HSCT. Details: Preliminary clinical research in patients undergoing an allogeneic HSCT shows that taking a specific oral FOS supplement, (Fibrulose F97, Cosucra Groupe) 5-15 grams daily for 21 days, beginning 5 days before transplant, does not reduce acute graft-versus-host disease, blood stream infections, or Clostridioides difficile infections or improve overall survival when compared with control (107931). However, this study may have been inadequately powered to detect a difference between groups.
• Hypercholesterolemia. Although there has been interest in using oral FOS for hypercholesterolemia, there is insufficient reliable information about the clinical effects of FOS for this purpose.
• Obesity. Although there has been interest in using oral FOS for obesity, there is insufficient reliable information about the clinical effects of FOS for this purpose.
• Osteoporosis. Oral FOS has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research in postmenopausal adults shows that taking a specific FOS product (NutraFlora, Ingredion Inc.) 3.2 grams plus calcium 800 mg daily for 24 months reduces the decline in total-body bone mineral density (BMD) when compared with calcium alone, but not when compared with a maltodextrin control. In a subgroup of patients with osteopenia, this combination reduced the decline in BMD in the lumbar vertebrae when compared with calcium alone or a maltodextrin control (94931).
• Travelers' diarrhea. It is unclear if oral FOS is beneficial for preventing traveler's' diarrhea. Details: Preliminary clinical research shows that taking FOS 10 grams orally daily for 4 weeks, starting 2 weeks before traveling to a medium- to high-risk destination, does not reduce the incidence of travelers' diarrhea when compared with placebo (10373). However, the study may have been inadequately powered to detect a difference between groups. More evidence is needed to rate FOS for these uses.

(Read more about FRUCTO-OLIGOSACCHARIDES (FOS))

POSSIBLY EFFECTIVE

• Constipation. Most clinical research shows that oral inulin modestly improves stool frequency, but may not improve discomfort, in adults and children with constipation. Details: A meta-analysis of clinical research in adults with constipation shows that consuming inulin improves stool frequency by approximately 0.7 stools per week. It also seems to improve stool transit time, consistency, and hardness, but does not reduce pain or bloating (93718). Additional clinical research shows that taking a specific type of inulin (OraftiGR, BENEO GmbH) 12 grams daily in three divided doses for 4 weeks increases stool frequency by approximately one stool per week when compared with a maltodextrin control. Taking inulin also reduces the number of patients experiencing hard and lumpy stools by 13%, but does not improve symptoms of bloating, distension, physical discomfort, or gas (96850). In children aged 2-5 years, one small clinical study shows that taking a specific combination of two inulin products (Orafti P95 oligofructose and Orafti GR inulin, BENEO GmbH), 2 grams twice daily in a dairy liquid for 6 weeks, improves the softness of stools, but not pain with stooling or stool frequency, when compared with a maltodextrin control (96848). Research in older adults is conflicting. One small study shows that taking inulin 20-40 grams daily for 19 days increases the number of stools from 1-2 per week to 8-9 per week (10415). However, other preliminary clinical research in this population shows that taking a specific inulin supplement (Fibruline Instant, Cosucra Groupe Warcoing) 15 grams daily in yogurt or stewed fruit for 4 weeks does not improve bowel symptoms, stool frequency, or stool consistency (93724).
• Diabetes. Short-term use of oral inulin along with antidiabetes drugs may improve glycemic control in some patients with type 2 diabetes; however, the benefits of long-term use are unclear. Details: Two meta-analyses of clinical research in normal weight and obese patients with type 2 diabetes show that taking inulin 0.8-10 grams orally daily for 6-12 weeks reduces glycated hemoglobin (HbA1c) by 0.65% and fasting plasma glucose by 16 mg/dL when compared with control. Taking inulin also improved HOMA-IR, a measure of insulin resistance, when compared with control. Researchers did not evaluate the most effective dose of inulin; however, most studies used 8.4-10 grams daily (103198,105533). In females treated with metformin and glyburide, taking inulin 10 grams daily for 8 weeks reduces fasting blood glucose by 15 mg/dL and HbA1c by 1% when compared with placebo (93719). Population research in adults has also found that high dietary intake of inulin over 8 years of follow up is associated with a 6% lower risk of type 2 diabetes when compared with low dietary intake (110515). Inulin has also been studied in combination with other supplements. Preliminary clinical research in elderly patients with diabetes shows that drinking a milk powder product supplemented with inulin and resistant dextrin 30 grams before breakfast and 15 grams before dinner for 12 weeks decreases fasting plasma glucose by 17 mg/dL, HbA1c by 0.38%, postprandial glucose by 27 mg/dL, body weight by 0.8 kg, and systolic and diastolic blood pressure by 5 mmHg when compared with placebo (99843). Other clinical research in adults with type 2 diabetes shows that taking a specific combination product (Orafti Synergy1, BENEO GmbH), containing 50% inulin and 50% fructo-oligosaccharides, 8 grams orally twice daily for 6 weeks does not reduce body weight or caloric intake or increase satiety scores when compared with placebo (107934).
• Obesity. Oral inulin might modestly improve short-term weight loss. Additional research is needed to determine the long-term effects of inulin on weight loss and weight maintenance in overweight or obese individuals. Details: Some clinical research in overweight and obese females with diabetes shows that taking inulin 10 grams daily for 8 weeks results in weight loss of 2.6 kg, compared with no weight loss in those taking placebo (93719). Preliminary clinical research in overweight or obese patients with prediabetes shows that taking a specific brand of inulin (Orafti Synergy 1, BENEO GmbH) 30 grams orally daily for 6 weeks reduces body weight by 0.4 kg, compared with a 0.4 kg increase in those in the control group (93721). Preliminary clinical research in adults with obesity shows that taking inulin 16 grams orally daily for 3 months moderately reduces body weight and body mass index (BMI) when compared with placebo. However, these effects were most prominent in subjects that also increased physical activity (110514). Additional preliminary clinical research in adults with overweight shows that adding 18 grams of inulin powder to green tea daily increases weight loss when compared with green tea alone. Over six weeks, individuals taking inulin lost 2 kg, compared with no weight loss in those taking green tea. Weight loss was maintained for at least 2 weeks (93726). Clinical trials in children show conflicting results. In children aged 7-12 years, a small clinical study shows that taking a specific oligofructose-enriched inulin product (Orafti Synergy1, BENEO GmbH) 8 grams orally in water before one meal daily for 16 weeks decreases weight gain by 2.4-fold and attenuates an increase in BMI when compared with placebo (96847). However, other preliminary clinical research in children with obesity aged 7-15 years shows that taking inulin extract 13 grams orally daily for 6 months does not reduce body weight or BMI when compared with placebo (110598). However, other clinical research shows that taking inulin orally in combination with other ingredients might not improve weight loss. Combining inulin, chromium picolinate, capsicum, L-phenylalanine, and other nutrients with caloric reduction and exercise doesn't seem to reduce weight in moderately obese patients when compared to caloric reduction and exercise alone (7607). Another preliminary clinical trial shows that taking inulin 10 grams with maltodextrin 10 grams daily for 12 weeks does not reduce body weight or improve body composition when compared with placebo in adults with overweight or obesity following a calorie-restricted diet (103202). Preliminary clinical research in adults with obesity also shows that consuming a seafood-based dietary product fortified with inulin 1.7 grams, fish oil 370 mg (containing eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), and bifidobacterium animalis daily for 12 weeks does not lower body weight, waist circumference, abdominal fat, serum cholesterol levels, or blood pressure when compared with placebo. However, consuming the product modestly improved some markers of insulin resistance (110600).

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Alcohol use disorder. It is unclear if oral inulin is beneficial in patients with alcohol use disorder. Details: Preliminary clinical research in adults with alcohol use disorder who were recently admitted to the hospital shows that taking a specific inulin product (Fibruline, Cosucra) 4-16 grams orally daily for 17 days does not improve liver function tests when compared with placebo. Some liver function tests were also worse in those treated with inulin (110601).
• Antibiotic-associated diarrhea. Oral inulin has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research in children aged 6 months to 14 years receiving antibiotics for common infections shows that taking a combination of inulin and fructo-oligosaccharides, up to 5 grams daily depending on age, does not reduce the rate of antibiotic-associated diarrhea (93720).
• Celiac disease. Small clinical studies suggest that patients with celiac disease who take oral inulin may have a lower risk of vitamin and mineral deficiency. Details: Preliminary clinical research in a small number of children and adolescents with vitamin and mineral malabsorption due to celiac disease shows that taking a specific oligofructose-enriched inulin product (Orafti Synergy 1, BENEO GmbH) 10 grams daily for 3 months improves the absorption of vitamin D, vitamin E, and iron, but not vitamin A (99841,99842). Levels of 25-hydroxy vitamin D and vitamin E increased by 42% and 19%, respectively, compared with no significant improvements in those taking placebo (99842). Although taking inulin did not improve serum ferritin levels, it did decrease serum hepcidin concentrations by 61% when compared with baseline, while no significant improvement was reported with placebo. Hepcidin is a regulator of iron homeostasis, and increased levels are associated with iron-deficiency anemia (99841).
• Child growth. Oral inulin has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research in healthy, exclusively formula-fed, infants less than 4 months of age shows that supplementing formula with 0.8 grams/dL of a specific combination product (Orafti Synergy1, Beneo-Orafti) containing 50% inulin and 50% fructo-oligosaccharide until 12 months of age does not improve markers of child growth, including body weight, length, and head circumference, when compared with placebo. The combination product was associated with a reduced duration of fever during infectious episodes, but not with a reduction in the number of infections. It is unclear if any potential effects are due to inulin, fructo-oligosaccharide, or the combination (107937).
• Chronic kidney disease (CKD). It is unclear if oral inulin is beneficial in patients with CKD. Details: In adults with CKD, adding inulin 19 grams daily for 6 months to a low-protein diet reduces serum insulin, fasting plasma glucose, total serum cholesterol, triglycerides, and markers of systemic inflammation, while increasing serum high density lipoprotein (HDL) cholesterol, when compared with baseline (105534). However, it is unclear if similar changes occur with a low-protein diet alone, or if the rate of progression of CKD is reduced. Population research in adults has found that high dietary intake of inulin over 8 years of follow up is not associated with a lower risk of CKD when compared with low dietary intake (110515).
• Hypercholesterolemia. It is unclear if oral inulin reduces cholesterol levels in patients with hypercholesterolemia. Details: Research in patients with hypercholesterolemia has shown mixed results, with some studies showing a small decrease and others showing no improvement in serum cholesterol levels (7604,8450,10412,10413,96849). A typical dose of inulin used is 6 grams orally three times daily for up to 6 weeks (10412). A meta-analysis of healthy, dyslipidemic, overweight or diabetic patients shows that inulin reduces levels of low-density lipoprotein (LDL) cholesterol by approximately 5% (96849). Another meta-analysis of randomized clinical trials in the same population shows that taking inulin 1.5-30 grams daily for 2-12 weeks reduces LDL cholesterol levels by 7 mg/dL and increases high-density lipoprotein cholesterol levels by 2 mg/mL when compared with control. However, this meta-analysis also included data from patients treated with fructo-oligosaccharides instead of inulin (107940).
• Hypertension. It is unclear if oral inulin is beneficial in patients with hypertension. Details: Population research in adults has found that high dietary intake of inulin over 8 years of follow up is associated with a 21% lower risk of hypertension when compared with low dietary intake (110515).
• Hypertriglyceridemia. It is unclear if oral inulin is beneficial in patients with hypertriglyceridemia. Details: A meta-analysis of clinical trials in normal and moderately hyperlipidemic patients suggests that taking inulin-type fructans at an approximate average dose of 14 grams daily reduces triglyceride levels by about 15 mg/dL when compared with control (93737). However, other research, including a meta-analysis of healthy, dyslipidemic, overweight or diabetic patients shows that taking inulin 1.5-30 grams daily for 2-12 weeks does not reduce triglyceride levels when compared with control. However, these negative studies are limited by small sample sizes and inclusion of data from patients treated with fructo-oligosaccharides instead of inulin (7604,107940).
• Impaired glucose tolerance (prediabetes). Several small clinical studies suggest that oral inulin is not beneficial in patients with prediabetes. Details: Preliminary clinical research in adults with prediabetes shows that taking inulin 15 grams orally daily for 24 weeks does not improve fasting blood glucose, glycated hemoglobin (HbA1c), or lipid levels when compared with placebo. However, taking inulin modestly improved markers of insulin resistance (107938). Two other, small, clinical trials show that taking specific inulin products (Orafti Synergy 1, BENEO GmbH or Frutafit IQ, Sensus American) 10-30 grams daily for 6 weeks does not improve blood glucose, insulin resistance, glucose homeostasis, or insulin sensitivity when compared with placebo (93721,107936). However, these studies may have been inadequately powered to detect a difference between groups.
• Iron deficiency anemia. Oral inulin has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research in young adult females with iron deficiency anemia shows that taking inulin 963 mg/kg and iron supplementation orally daily for 3 months modestly improves serum hemoglobin, hematocrit, and iron levels when compared with a control group consuming iron-fortified flour (110599).
• Menopausal symptoms. It is unclear if oral inulin is beneficial in patients with hypertriglyceridemia. Details: Preliminary clinical research in adults experiencing menopause shows that consuming yogurt enriched with a specific inulin (Frutafit TEX, Sensus Company) 1.5% daily for 6 weeks moderately improves menopausal symptom scores, including depression, anxiety, and vasomotor symptoms, when compared with yogurt alone (107659).
• Nonalcoholic fatty liver disease (NAFLD). Taking oral inulin alone does not seem to improve liver transaminase levels in patients with NAFLD. Details: Preliminary clinical research in patients with NAFLD shows that taking metronidazole 400 mg twice daily for one week plus inulin 4 grams twice daily for 12 weeks reduces levels of alanine aminotransferase and aspartate aminotransferase when compared with placebo. However, when inulin is taken without metronidazole, these measures are not improved (103200).
• Polycystic ovary syndrome (PCOS). It is unclear if oral inulin is beneficial in patients with PCOS. Details: Preliminary clinical research in overweight or obese females with PCOS shows that taking specific products containing inulin (FrutaFit TEX, Sensus American) or inulin and fructo-oligosaccharides (FrutaFit IQ, Sensus American) 10 grams orally once daily for 12 weeks does not reduce systolic or diastolic blood pressure when compared with placebo. However, the validity of this study is limited by the inclusion of subjects with and without hypertension at baseline (107941). More evidence is needed to rate inulin for these uses.

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INSUFFICIENT RELIABLE EVIDENCE to RATE

• Common cold. Preliminary clinical research shows that taking a specific larch arabinogalactan extract (ResistAid, Lonza Ltd.) 4.5 grams daily for 12 weeks does not significantly decrease the number, intensity, or symptoms of common colds when compared with placebo in patients who frequently suffer from colds. However, larch arabinogalactan appears to increase the percentage of patients who experience no cold episodes. About 42% of patients receiving larch arabinogalactan extract had no cold episodes, compared to only 28% of patients receiving placebo (93104).
• Hyperlipidemia. Preliminary clinical research shows that taking larch arabinogalactan 8.4 grams daily for 6 months, or 15-30 grams daily for 6 weeks, does not significantly lower total cholesterol, low-density lipoprotein (LDL) cholesterol, triglycerides, apolipoprotein B (apo B), apolipoprotein A-1, body weight, blood pressure, or glucose levels in healthy people (15617,15620). It is not known if larch arabinogalactan lowers lipid levels in patients with hyperlipidemia. More evidence is needed to rate larch arabinogalactan for these uses.

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LIKELY SAFE ...when used orally in amounts commonly found in foods. Beta-glucans derived from oat bran, baker's yeast, or brewer's yeast (Saccharomyces cerevisiae) have Generally Recognized as Safe (GRAS) status in the US (4912).

POSSIBLY SAFE ...when used orally and appropriately, short-term in medicinal amounts. There is some evidence that yeast-derived beta-glucans 15 grams daily can be used safely for up to 8 weeks (7272). Oat-derived beta-glucans 3-10 grams daily can also be used safely for up to 12 weeks (7272,5796,17129,34700,34727,34729,34765,34766,34811,34812)(34876,107935,109206). ...when used topically and appropriately. A specific beta-glucans serum and emulsion (Awake; Hangzhou Songyang Biotechnical) combination has been used with apparent safely for up to 12 weeks in clinical research (109210). A specific beta-glucans cream (Imunoglukan P4H, PLEURAN s.r.o.) has been used with apparent safety 2-3 times daily for up to 6 months (98201).

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

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POSSIBLY SAFE ...when used orally and appropriately, alone or in combination with probiotics, in doses up to 30 grams daily for up to 4 weeks (741,745,8505,90266,107729,107931). ...when a specific FOS product (NutraFlora, Ingredion Inc.) is used orally in combination with calcium at doses up to 3.2 grams daily for up to 24 months (94931).

CHILDREN: POSSIBLY SAFE
when short-chain FOS are included in approved infant formulas for healthy term infants at a level of up to 4 grams/L or 1 gram/kg daily (94929,94930,98651).

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

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LIKELY SAFE ...when used orally in amounts commonly found in foods. Inulin has Generally Recognized As Safe status (GRAS) in the US (93728).

POSSIBLY SAFE ...when used orally and appropriately in supplemental doses, short-term. Doses of 8-18 grams daily have been used safely for up to 24 weeks (7604,7605,7606,7607,8451,93716,93719,93726,103200,107936,107935,107938). Also, 20 grams daily has been used with apparent safety for up to 3 weeks (96836,96850). There is insufficient reliable information available about the safety of inulin when used long-term.

CHILDREN: LIKELY SAFE
when used orally in amounts commonly found in foods. Inulin has Generally Recognized As Safe status (GRAS) in the US (93728).

CHILDREN: POSSIBLY SAFE
when used orally and appropriately in supplemental doses, short-term. Clinical studies have used doses of 3-6 grams daily for 10 days in children 3-6 years of age and 5-13 grams daily for up to 6 months in children 7-15 years of age with apparent safety (96847,110598,110602). ...when used in infant formula. A formula containing chicory fructans (Orafti Synergy1, BENEO GmbH), approximately 50% of which were inulin, has been used with apparent safety in infants for 8-12 months (93717,107937).

PREGNANCY AND LACTATION: LIKELY SAFE
when used orally in amounts commonly found in foods (93728). There is insufficient reliable information available about using inulin in medicinal amounts during pregnancy or lactation; avoid use.

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LIKELY SAFE ...when used orally in amounts found in foods. Larch arabinogalactan has Generally Recognized As Safe (GRAS) status in the US (3529).

POSSIBLY SAFE ...when used orally and appropriately in medicinal amounts, short-term. Larch arabinogalactan has been safely used at doses of 1.5-8.4 grams daily for up to 6 months (15617,15618,17370,93102,93104,104281). Higher doses of 15-30 grams daily have been used with apparent safety for up to 6 weeks (15620). There is insufficient reliable information available about the safety of larch arabinogalactan when used long-term.

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

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ANTIHYPERTENSIVE DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, taking beta-glucans with antihypertensive drugs might increase the risk of hypotension.  Details Clinical research shows that taking beta-glucans may reduce systolic and diastolic blood pressure in some hypertensive individuals (34684,34691,34722).

IMMUNOSUPPRESSANTS Interaction Rating = Moderate Be cautious with this combination. Severity = High •  Occurrence = Possible •  Level of Evidence = D Theoretically, beta-glucans might interfere with immunosuppressive therapy.  Details Some clinical research shows that beta-glucans have immunostimulant effects (34809,34860,34879,92659,103886,105264).

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ANTIDIABETES DRUGS Interaction Rating = Minor Be watchful with this combination. Severity = Moderate •  Occurrence = Unlikely •  Level of Evidence = D Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.  Details Some clinical research shows that inulin improves glycemic control in patients with diabetes; however, it is unclear if it has hypoglycemic effects (93719,99843,103198).

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General ...Orally and topically, beta-glucans seem to be well-tolerated.
Most Common Adverse Effects:
Topically: Contact dermatitis, skin reactions.

Dermatologic ...Topically, a specific beta-glucans cream r.o.) has been reported to cause skin reactions and contact dermatitis in one clinical trial. These reactions occurred in 27% of patients; reactions were mild and self-limiting in 12% of patients (98201).

Hematologic ...In one clinical trial of children and young adults with neuroblastoma, one of 44 patients developed transient elevations of aspartate transaminase and alanine transaminase within five days of starting oral beta-glucans 120 mg/kg daily (109203).

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General ...Orally, FOS are generally well tolerated.
Most Common Adverse Effects:
Orally: Abdominal pain, bloating, flatulence.

Gastrointestinal ...Orally, FOS may cause flatulence, belching, abdominal pain, intestinal sounds, constipation, and bloating. These symptoms can occur commonly in some patients, but are generally mild at doses under 10 grams per day (745,750,8509,98651,107931). However, a meta-analysis of 8 small clinical studies shows that taking FOS at doses ranging from 2.5 grams to 15 grams daily for up to 8 weeks does not increase the rate of abdominal pain, bloating, flatulence, or intestinal sounds when compared with control groups (110710).

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General ...Orally, inulin is well tolerated.
Most Common Adverse Effects:
Orally: Bloating, constipation, diarrhea, flatulence, and gastrointestinal cramps.
Serious Adverse Effects (Rare):
Orally: Anaphylaxis has occurred following consumption of foods high in inulin.

Gastrointestinal ...Orally, inulin may cause flatulence, bloating, diarrhea, constipation, and gastrointestinal cramps, especially at doses over 30 grams (7604,8450,8509,93716,93721,93724,96836,96850,96851,99843)(107936,107940,107941,110602).

Immunologic ...Severe allergic reactions to inulin-containing foods have been reported. There is one report of anaphylaxis following consumption of foods with a high concentration of inulin including salsify, artichoke leaves, and margarine (7608).

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General ...Orally, larch arabinogalactan is generally well tolerated (3530,17370,93102). Some people can experience bloating and flatulence (3530).

Gastrointestinal ...Orally, larch arabinogalactan can cause bloating and flatulence (3530).

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