Here's the summary:
- Biotin, which is actually vitamin H, can help nails grow stronger and healthier.
- Biotin can be consumed both in some foods and in over-the-counter supplements.
- Biotin has not been shown to have any side effects, even in high doses.
- Long-term antibiotic or anticonvulsant medication use can reduce the body's levels of biotin, in which case a supplement may be particularly advisable.