I just recently used igf-1lr3 for the 1st time and i must say it was amazing. I used it for about 25 days or so, and not only did i put on about an inch on my arms, but i gained 12 lbs ,and lost some bf. I have never looked better, and have now reached my personal bests in size, and strength. I used it byitself just before starting my current cycle, and now i am even bigger than i was, and still lean. IMO i will never use gh again as long as i can get igf-1, but u do have to be leary about where u get it from, some guys may be selling u hcg or something, but i know mine was good, i did all of my shots in my bi's and tri's. Started at 40 mcgs for about 2 weeks, then upped it to 50 mcgs and noticed better results. But imo gh is a waste, i mean igf is cheaper, it doesnt need to be used as long, u see the results much quicker, and u almost dont have to use gear ever again as long as u have legit igf, not to mention alls gh does is help your body produce more igf-1 so why not go right to the source? I think its an amazing compound and will be using the other vials i bought very soon.