The stuff is awesome, its a very safe drug for females to bulk with there is no possibility of masculinizing side effects at any dose. My girlfriend will use IGF-1 at 66mcg per day that is a hefty dose and she loves it. The mass you build from it is pure lean muscle, however there is some water retention. When she uses it we run anabolics for 4 weeks then take 3 weeks off anabolics and use IGF-1 in between the steroid cycles.