Yes: There is no known toxic dose of biotin. While 1000 mcg may sound like a lot, it is the same as 1 mg. 15-16000 mcg (15-16 mg) doses have been researched and found to help lower triglycerides and blood sugar in diabetics without side effects. People commonly use biotin for brittle nails and hair health You can save money by buying 5000 mcg tablets. See http://lpi.oregonstate.edu/mic/vitamins/biotin
Answered 9/12/2015
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