Cabergoline is used to treat hyperprolactinemia (high levels of prolactin in your body). This happens when your pituitary gland makes extra prolactin. High prolactin levels may be caused by a hormone problem or by a tumor in your pituitary gland.
High prolactin levels can cause changes in a woman’s ovulation, menstrual cycle, and breast milk production. In men, high prolactin levels can affect reproduction and cause sexual issues. These issues include a decreased sex drive and not being able to get or keep an erection.