Hormone therapy

Here’s the lowdown on why these medications should not be used during pregnancy:

Hormone therapy. The “female” hormone, estrogen, and the anti-androgens, flutamide and spironolactone, are sometimes used to treat acne in women. None should be taken while a woman is pregnant. Flutamide and spironolactone can cause birth defects. It is not known if these medications can be passed along when a woman is breast feeding so the medications must also not be used if a woman chooses to breast feed.