is a medication used to treat hyperprolactinemia, a condition characterized by high levels of the hormone prolactin in the blood. It belongs to a class of drugs called dopamine agonists, which work by mimicking the action of dopamine, a neurotransmitter that helps regulate prolactin production in the pituitary gland.

High levels of prolactin can cause a range of symptoms, including irregular menstrual periods, decreased libido, and infertility in women. In men, high levels of prolactin can cause erectile dysfunction, decreased libido, and breast enlargement.