Prenatal vitamins beneficial for hair growth and nail health?

No. I don't know how that popular myth got started, but i know of no credible evidence that vitamin tablets do anything for hair or nails. Biotin (available in any health food store) does promote hair and nail growth (5000 units/day) if taken regularly.

Related Questions

Do prenatal vitamins help with hair skin & nails if I'm not pregnant?

Yes it may. Try biotin too.Minimize stress, get enough rest, eating fresh fruits and veggies , exercise and quit smoking if u do -may help maintain healthy skin, hair and nails. Read more...
Perhaps. Prenatal vitamins are unique in that they have a higher amount of Folic Acid along with iron, B12 etc to aid in the building of the blood of the fetus. If you happen to be lacking in some of these nutrients due to a poor diet, then they may be helpful. Read more...