Totally safe but...: It is totally safe to take; no toxic doses are known and research on doses of 16, 000 mcg/day safely lowers blood sugar in diabetics: http://lpi.Oregonstate.Edu/infocenter/vitamins/biotin/ biotin is found in many foods ; deficiency is rare. Deficiency causes problems with hair ; nails but it's not yet proven that large amounts help more than small amounts, though many try it for this.
Answered 4/21/2016
4.5k views
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question