Nov 1, 2025 · Follow your doctor's orders or the directions on the label. The following information includes only the average doses of this medicine. If your dose is different, do not change it …

Dietary supplements that contain biotin are often promoted to improve the health of your hair, skin, and nails, but there is little scientific evidence to support these claims.

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 2.5 mg daily.

Oct 21, 2024 · Since biotin is a water-soluble vitamin, any excess amount will leave the body through your urine. Studies show that up to 10–50 mg of biotin in healthy adults—more than …

Apr 4, 2025 · There is no evidence that biotin supplementation at the recommended daily intake (RDI) is required or effective, except in cases of biotin deficiency. A healthy diet will include the …

Jan 25, 2024 · Whether you're taking biotin to improve your hair, skin, and nails, or just for general health, here's how much biotin to take each day.

Sep 3, 2024 · The recommended daily intake of biotin varies, but a minimum of 30 micrograms for adults, depending on age, gender, and specific health needs, is often recommended.

Sep 3, 2025 · The only known supplemental dose of biotin that has been tested orally in humans — for the purposes of enhancing the quality of brittle nails — is 2.5mg taken once daily over …

Oct 15, 2025 · Biotin is safe to take — even at high doses. But biotin supplements can affect the results of certain blood tests. Talk to your primary care provider if you think you’ve taken too …

Biotin overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.