I just started taking biotin in a hair/skin/nails formula (Nature's Bounty Optimal Solutions). My fingernails are growing like wildfire but I got it specifically for my hair. It's getting so thin and lifeless.
The supplement I'm taking has 5,000 mcg of Biotin. I take a B Complex (actually 2 of them) every day along with Vitamin C (1,000 mg). The supplement also has lots of vitamins in it, too.
I'd be interested in what becomes of this study. How many mgs does 5,000 mcgs equal?