Oxygen Labs HCG 5000OXYGENSLAB PREGNYL(HCG) 5000(5000IU CHORIONIC GONADOTROPIN AMP=1X 1ML POWDER+WATER) Pregnyl (chorionic gonadotropin) is a hormone used to cause ovulation and to treat infertility in women, and to increase sperm count in men. Human chorionic gonadotropin (HCG) is also used in young boys when their testicles have not dropped down into the scrotum normally. Human Chorionic Gonadotropin is the active ingredient used in Pregnyl. It is typically used as