Has anyone tried using GNC's Hair skin and nails 30 day program?

If so do you recommend me taking them and how much growth have you had? Thanks in advance for your feedback.Has anyone tried using GNC's Hair skin and nails 30 day program?
tried it all including gnc... nothing works as good as walmarts biotin for hair skin and nails and less 7.00 a bottle for a 120 day supply. i doubled the dosage and got the greatest results! good luckHas anyone tried using GNC's Hair skin and nails 30 day program?
I haven't tried GNC's but I have tried Futurebiotics. It seemed to help but remember nails grow 1/8 inch a month and hair 1/2 inch per month so it will take a long time to see the results. Good luck and be patient.
im using gnc's hair skin and nails too just not the 30 day program. so far my nails have been growing like crazy but i havent noticed anything about my skin or hair. Ive heard that it takes way longer for your hair to start growing.