There are stuff out there that FDA don't even approve because they don't have manpower to investigate each one of them, they've not proven, they're billion dollar industry, until someone complains they're very very sick. If you want your hair to grow faster, you are what you eat. Start eating healthy foods, check out pyramid food groups.gov. It takes a lot of patience. There's no fast cure. Many of those pills are just sugar and/or pills that can cause you to start gaining weight. If your hair isn't growing normally, there are reasons why. Supplements, hair dyes, perming, straightening, medications, and too much of everything. Add to that the 7,000 + toxics found in your home, plus pollution found outdoors. The majority of hair problems here, are from women under 30, with damaged hair, hair stopped growing, hair not growing fast enough, hair falling, etc.... trying to be a follower of trend. And those are the same women giving advice here. Go figure!