Return of menstruation and normalization of prolactin in hyperprolactinemic women with bromocriptine-induced pregnancy.

Fifty-eight hyperprolactinemic women were followed up for 13 to 108 months after at least one bromocriptine-induced pregnancy for investigation of whether the pregnancy had any adverse long-term effects on the hyperprolactinemic state. Fifteen women had two term pregnancies. The prolactin (PRL) level decreased greater than 50% in 20 women after the pregnancy. Only two women showed a PRL level increase. Spontaneous uterine bleedings returned in 16 women, whereas 42 remained amenorrheic. Thus, bromocriptine-induced pregnancy in women with hyperprolactinemia has no negative long-term effect on PRL secretion.