Chorionic gonadotropin belongs to a group of medicines called gonadotrophins (sex hormones). It controls the release of eggs from the ovary in women, and controls production of the male hormone, testosterone in men.
In female infertility it can be used to cause women to ovulate (Ovulation induction). Chorionic gonadotropin is also used along with other fertility drugs, to help produce eggs in medically assisted reproduction programmes (IVF treatment).
In men it is used to help treat delayed puberty, undescended testes or oligospermia (low sperm count).