I just started taking Biotin 2.500mcg. Got it for my skin and nails and hope it helps with them (brittle nails dry skin).

I heard because of the high dosage of Biotin it causes hair to fall out and with tysabri had the same issue. Three months not sure if it is helping or not still taking it. The first month was weird possibly had stomach aches not positive though.

I have been taking biotin for the past two months and have had no stomach issues. I take biotin with keratin I don't know if maybe that makes a difference or not but I started taking it because I am losing hair and I think that is being caused from the tecfidera but I'm not positive

I started taking Biotin my doctor prescribed in the beginning it bothered my stomach and had a bad week but after that it is worth it don't give up.