They don't help your hair grow any faster. They do contain more folic acid on the average than most multivitamins, but less vitamins than many other combos on the market. It's just a term for a comprehensive supplement. Many pregnant women have eratic eating habits and some have nausea for the first trimester, so a supplement is a little added insurance. When we discharge new mothers from the hospital, we tell them to continue their vitamins. I've had some women take a Flintstone vitamin everyday before giving birth, and that's ok too.....they won't grow hair or nails any faster. You will just pee out the vitamins (water soluable vitamins) that your body does not need (your urine will be neon yellow). Fat soluable vitamins like A,D,and E and minerals can accumulate to toxic levels in the body if taken to excess. You CAN take too many vitamins.