Where is it found? Beta-glucan is found in the cell walls of many yeast and cereal fibers, such as oats, wheat, and barley. As a dietary supplement, beta-glucan is available in liquid form as well as in capsules and tablets. Beta-glucan has been used in connection with the following conditions (refer to the individual health concern for complete information): Rating Health Concerns High cholesterol Immune enhancement Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit. For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support and/or minimal health benefit. Who is likely to be deficient? Because beta-glucan is not an essential nutrient, deficiencies do not occur. How much is usually taken? For lowering cholesterol levels, the amount of beta-glucan used in clinical trials has ranged from 2,900 to 15,000 mg per day. For enhancing immune function, an effective amount has not yet been determined due to the lack of studies in this application. However, manufacturers of beta-glucan products usually recommend between 50 and 1,000 mg daily (to be taken on an empty stomach), although some products contain as much as 500 mg per capsule. Are there any side effects or interactions? No side effects have been reported. At the time of writing, there were no well-known drug interactions with beta-glucan. contact email:arenelin@organic-herb.com MSN:arene06@live.cn QQ:471452065