Is 10000 mcg of biotin too much? Mayo Clinic states that 10,000 mcg is a safe dose, as no adverse side effects have been noted to date. Reassuringly, even “mega doses” of 300,000 mcg found no side effects in neurological research.
How many mg of biotin should I take for hair growth? 2 to 5 milligrams
Is 5000 mg of biotin good for hair growth? We recommend taking 500 mcg-5,000 mcg of biotin per day to support healthy hair, skin, and nails.
How Much Biotin Needed For Hair Growth
The Food and Drug Administration (FDA) does not have a daily recommended dietary allowance for biotin. However, according to estimates, an intake of 30 micrograms (mcg) may be adequate. The average intake of biotin in Western countries, excluding the United States, is an estimated 35–70 mcg per day.