Nature's Life - Biotin Essential Coenzyme 2,500 mcg. - 100 Vegetarian Capsules
Nature's Life Biotin is an essential nutrient that functions as a coenzyme. Biotin is important for healthy hair and skin. Preliminary reports have suggested that adequate oral doses of biotin (9-16 mg per day) may provide nutritive support for the maintenance of normal blood glucose levels.
Biotin, a water-soluble B vitamin, acts as a coenzyme in the metabolism of protein, fats, and carbohydrates.
Where is it found?
Good dietary sources of biotin include organ meats, oatmeal, egg yolk, soy, mushrooms, bananas, peanuts, and brewer’s yeast. Bacteria in the intestine also produce significant amounts of biotin, but evidence is conflicting as to whether biotin produced by intestinal bacteria is present at a location or is in a form that permits significant absorption by the body.
Who is likely to be deficient?
Certain rare inborn diseases can leave people with depletion of biotin due to the inability to metabolize the vitamin normally. A dietary deficiency of biotin, however, is quite uncommon, even in those consuming a diet low in this B vitamin. Nonetheless, if someone eats large quantities of raw egg whites, a biotin deficiency can develop, because a protein in the raw egg white inhibits the absorption of biotin. Cooked eggs do not present this problem. Long-term antibiotic use can interfere with biotin production in the intestine and increase the risk of deficiency symptoms, such as dermatitis, depression, hair loss, anemia, and nausea. Long-term use of anti-seizure medications may also lead to biotin deficiency. Alcoholics and people with diseases of the stomach have been reported to show evidence of poor biotin status. However, the usefulness of biotin supplementation for these people remains unclear. In animals, and possibly in humans, biotin deficiency can cause birth defects. As biotin deficiency may occur in as many as 50% of pregnant women, it seems reasonable to use a prenatal multiple vitamin and mineral formula that contains biotin.
How much is usually taken?
The ideal intake of biotin is unknown. However, the amount of biotin found in most diets, combined with intestinal production, appears to be adequate for preventing deficiency symptoms. Researchers have estimated that 30 mcg per day appears to be an adequate intake for adults. Typically, consumption from a Western diet has been estimated to be 30–70 mcg per day. Larger amounts of biotin (8–16 mg per day) may be supportive for people with diabetes by lowering blood glucose levels and by preventing diabetic neuropathy. Biotin in the amount of 2.5 mg per day strengthened the fingernails of two-thirds of a group of people with brittle nails, according to one clinical trial.
Are there any side effects or interactions?
Excess intake of biotin is excreted in the urine; no toxicity symptoms have been reported.
Biotin works with some other B vitamins, such as folic acid, pantothenic acid (vitamin B5), and vitamin B12. However, no solid evidence indicates that people supplementing with biotin also need to take these other vitamins. Symptoms of pantothenic acid or zinc deficiency have been reported to be lessened with biotin, though people with these deficiencies should supplement with the nutrients in which they are deficient. Researchers have speculated that biotin and alpha lipoic acid may compete with each other for absorption or uptake into cells; but little is known about the importance of these interactions in humans.
There is one report of a 76-year-old woman who developed a life-threatening condition (eosinophilic pleuropericardial effusion) while taking 10 mg of biotin per day and 300 mg of pantothenic acid per day. However, it is not clear whether the vitamins caused the problem
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