i would say that the effect is slow. its like filling a bucket with a water dropper. one day you look in the bucket and realize it's there. if you watch it one drop at a time, you cant preceive the bucket filling. i would say that you should notice something in 2-3 months. but within a month, i can see that my stomach is flater and i feel generally tighter. in my early contest days, i had used a few IU for several shows. then for a couple shows i didn't use GH. the difference was honestly not very big. it will help with fat loss, but fat loss is much more dramatic with drugs like cytomel and clen