Is it bad to take biotin everyday? When taken by mouth: Biotin is likely safe for most people when taken in doses up to 300 mg daily for up to 6 months. But it is more commonly used in lower doses of-5 mg daily. When applied to the skin: Biotin is likely safe for most people when applied in cosmetic products that contain up to 0.6% biotin.
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 much biotin is too much? No toxicity of excess biotin intake has been described. “It is a B vitamin, so it is difficult to overdose on it—most people will urinate out what they do not need,” says Johnson. “With that said, I suggest not taking more than the daily recommended dose of 30-100 mcg per day for an adult.