Cabgoline Cabergoline tablets What do cabergoline tablets do?Cabergoline (Dostinex(R)) is used to treat high levels of prolactin, a hormone made by the body that affects such things as the menstrual cycle, breast milk production, fertility, and sexual function. Cabergoline also treats high levels of prolactin which occur with certain tumors such as adenomas. This medication is sometimes used for the treatment of Parkinson’s disease or restless-legs syndrome.