and I might consider waiting until you're a little older before taking these thing that may, at your age, cause more harm than good...and when you're older (you are much too young for sex in my opinion) learn how to use what your are given...many women prefer technique to size and aren't thrilled by a baseball bat sized penis slamming into them.
Jim
It depends on the formula mostly, but 90% of them are not as effective as described on the package.)