Though fewer than 20 cases have been reported of cabergoline being continued throughout a pregnancy, “there have not been any problems with that,” said Dr. Molitch.
Overall, over 6,000 pregnancies with bromocriptine exposure, as well as over 1,000 with cabergoline, have now been reported.
Dr. Molitch summarized the aggregate safety data for each dopamine agonist: “When we look at the adverse outcomes that occurred with either of these drugs, as far as spontaneous abortions or terminations, premature deliveries, multiple births, and, of course, the most important thing here being major malformations … in neither drug is there an increase in these adverse outcomes” (J Endocrinol Invest. 2018 Jan;41[1]:129-41).
“In my own mind now, I think that the number of cases with cabergoline now is quite sufficient to justify the safety of its use during pregnancy,” Dr. Molitch said. “However, this is sort of an individualized decision between you – the clinician – as well as your patient to make”: whether to trust the 1,000-case–strong data for cabergoline. “I no longer change patients from cabergoline to bromocriptine because of safety concerns. I think that cabergoline is perfectly safe,” he added.