Dostinex 0.5mg 8 Tabs Generic Name: cabergoline (ca BER goe leen) Brand Names: Dostinex What is Dostinex (cabergoline)? Cabergoline is in a group of drugs called dopamine receptor antagonists. It works by reducing the amount of prolactin (a hormone) that is released from the pituitary gland. Cabergoline is used to treat a hormone imbalance in which there is too much prolactin in the blood (also called hyperprolactinemia). Cabergoline may also be used for purposes other than those listed in this medication guide. Please consult your physician before taking any medication.