Bromocriptine blocks release of a hormone called prolactin from the pituitary gland.
Prolactin affects the menstrual cycle and milk production.
Bromocriptine is used to treat certain menstrual problems or to stop milk production in some women or men who have abnormal milk leakage. It is also used to treat infertility in both men and women that occurs because the body made too much prolactin. Bromocriptine is also used to treat some people who have Parkinson's disease. It works by stimulating certain parts of the brain and nervous system that are involved in this disease. Bromocriptine may also be used for other conditions as determined by your doctor.