Treatment of hyperprolactinemic luteal insufficiency with bromocriptine

Twelve patients with infertility and insufficent luteal function were studied during a control cycle, and during a cycle when 2.5 mg of bromocriptine was given twice daily. Serum levels of prolactin, progesterone, estradiol-17-beta, FSH and LH were determined during both cycles. Endometrial biopsies were taken from most patients during the late luteal phase. Two patients had persistent hyperprolactinemia, approximately 35-45 ng/ml, and both had repeated insufficient luteal function, which completely reverted to normal during treatment. Five of the 10 normoprolactinemic patients achieved a normal luteal function during bromocriptine therapy. No pregnancies were achieved during the study but one patient later conceived during bromocriptine therapy.