I want to know more about natural growth...?

i refuse to get implants so i've been looking at the most natural way to promote enhancement. i know all about maging technique and exercise, etc. and have found some recipes that are "supposed to" help out but i'm not having much luck. i wasn't very interested in creams and pills because they don't work half the time and i don't want to order anything, i'd rather just get it from a convenient store. so really all i want to know is either 1) where can you easily find these supplements and creams and such in a store without prescription or whatever 2) what sort of herbs and vitamins are guaranteed to stimulate growth?