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I have heard though that taking biotin may increase facial hair. is that true? Should I have noticed anything by now? or could it still happen in the future? I am taking 2000mcg every day. Is that an adequate dosage? Thx.


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replied May 27th, 2008
Vitamins Answer A4183
An adequate amount of biotin is about 30 to 100 mcg daily. The U.S. recommended daily doses for biotin, the value used for nutritional supplement and food labeling purposes, is 300 micrograms/day. Doses of up to 2,500 mcg have been used safely to treat hair and nail problems. Higher intakes have been recommended for reducing blood sugar levels in diabetics (5-15 mg/d).


No side effects have been reported for biotin in amounts up to 10 milligrams (10,000 mcg) a day. Like other water soluble B-vitamins, excess biotin is excreted in the urine. Even when taken in high doses (2,500 mcg to treat hair and nail problems), there are no known side effects. In people without disorders of biotin metabolism, doses of up to 5000 mcg/day for two years were not associated with adverse effects.





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