I know Drive/RPM/IGF-2 worked for me. I was a beast in the gym, and looked sick from the vascularity. People watched me too some crazy repps when I was feeling too good. Solid hard muscles too after a couple weeks. In 3 weeks I did gain 7 pounds, and have kept it and have gained another 1-2 since I stopped using em. No hype. People noticed through that time that I got bigger. And performance increased in my sports.
It wasn't placebo when your veins look like tree logs....and endurance made over training a danger I didnt pay attention to a couple times....