I have tried igf lr3 once and didn't see much at all happen. A lot of people say it does nothing. I would say it did almost nothing. Kept me hungry after cycle but I believe that was about it. I have not done a lot of it so I can't be 100 % sure it doesn t work for me. On the other hand I am taking test and gh and having some truly impressive results. I say GH all the way.