I dont know what to tell you bro I have used it in and out of my cycles and got big but then again I also used an array of other things so I cant tell you how much of the leaness and muscle gains came directly from the GH.Everytime I see some one answer these GH questions as it worked great or it didnt work,makes me wonder if they used it by itself because if you use it with gear there is no way you can tell what did what.