it is a CYP2C19 inhibitor [see the two images] and an inducer of CYP1A2 / CYP3A4- so it'll reduce concentrations and length for oral estrogen, in example. but also like, dozens of medications in general.

for the same reason people in general can and will lactate from antipsychotics, calcium channel blockers, protease inhibitors, or even opioids / cocaine. lactation happens -after- pregnancy*, not -during- it. after progesterone levels drop, a dopamine-prolactin circuit triggers; you lactate.

would try FODMAP unless there's a true diagnosed [labs] family history