Beta-endorphin levels in women with elevated prolactin and following bromocriptine therapy

1. Plasma levels of beta-endorphin were not significantly different in women with normal plasma prolactin or women with hyperprolactinemia. 2. A bromocriptine induced decrease in plasma prolactin was not accompanied by a decrease in beta-endorphin. 3. This study suggests that no direct link exists between plasma prolactin levels and endogenous beta-endorphin.