Overview
What is biotin?
What are biotin’s main benefits?
What are biotin’s main drawbacks?
How does biotin work?
Dosage information
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 six months.
This dose appears relatively safe, although it is much higher than the recommended daily intake (RDI) of biotin which ranges from 25-30mcg (youth) upwards to 100mcg (adults). The biotin dose found in many multivitamins (30mcg or 0.03mg) seems more than sufficient.
Frequently asked questions
Do B vitamins increase the risk of getting cancer?
What are other names for Biotin (Vitamin B7)?
Update History
More safety information added