i'm currently using IGF at 40 mcg per day after workouts, I went through 1 mg already and just started my 2nd mg bottle> I plan on running 3 mg back to back at that 40 mcg dosage. I"m using 5/16'' pins, very small, directly into the muscle, but I'm not sure if it would matter if I switched to 1'' pins or not. I've gained about 8 lbs in 3 1/2 weeks, but i'm also running it along with a aas cycle of test, deca, and anavar.