From my own personal experience I saw incredible gains in the first two weeks. Let me give you a little background; at the time I was 25(30 now) 5'10", 272lbs., 10%bf. I was competing on the national level and was in the middle of your normal bulk cycle(test, deca, drol and lots of it) when I finally got my hands on some Nutropin aq. The gh was added to the mix at 6iu day taken strickly at night, insulin was added post workout at 15 units taken with creatine, glutamine, 150g carbs(ultra fuel) and 100g whey protein, and 50mcg. a day of cytomel. The results were amazing. In a 2 week span my weight went from 272 to 285, bf dropped from 10% to 8%. I made more improvement in 2 weeks on gh than I did the entire previous year on juice alone. So anyone that says that gh only benefits you through long term use I beg to differ...