TREATMENT OF WOMEN WITH THE GALACTORRHEA-AMENORRHEA SYNDROME WITH PYRIDOXINE (VITAMIN B6)

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Abstract
Three women with the galactorrhea-amenorrhea syndrome and elevated prolactin concentrations experienced a return of regular ovulatory menses within 37-94 days after starting pyridoxine treatment (200–600 mg/day). In each the galactorrhea ceased and serum prolactin levels were maintained in the normal range while taking pyridoxine. In two other women with prolonged secondary amenorrhea but without hyperprolactinemia or galactorrhea, pyridoxine at dosages up to 600 mg/day did not restore ovulatory menses. Pyridoxine treatment was also ineffective in decreasing profuse galactorrhea in one woman with normal prolactin levels and regular ovulatory menses. In the three women effectively treated with pyridoxine, the galactorrhea returned, serum prolactin levels increased, and the menses ceased after discontinuing pyridoxine. These results imply that pyridoxine, by decreasing the excessive secretion of prolactin, may be useful in the long-term medical management of women with hyperprolactinemia and the galactorrhea-amenorrhea syndrome.

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