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Edited by thixle - 6/16/11 at 5:05pm
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I'm sorry you are facing this decision, especially with your marriage seeming unstable. I'm sending you love, light, and strength as you make your decision. 
Secretion of misoprostol in milk is unlikely due to rapid maternal metabolism.  However, secretion of its active metabolite is possible and could produce diarrhea in newborns alothough this has not been reported.Â

| We do not have data on the transfer of RU-486(mifepristone) into human milk. That said, it has a steroid-like structure, it penetrates the CNS and amniotic fluid extremely poorly, and it is highly protein bound (98%). Thus I would guess that its transfer into milk would be minimal to virtually nothing. Mifepristone is a potent inhibitor of the progestin receptor. Interestingly, it has actually be used in monkeys postnatally to stimulate milk production due to its effect on the progestin receptor. So I really doubt it would transfer significantly to a breastfeeding infant, nor would it likely produce side effects in such an infant even if it did. |
| Yes, you can. Mifepristone (RU-486) shouldn't require a pump and dump, because it's a progesterone blocker and doesn't have an effect on the baby though it does pass into breast milk. If you choose the methotrexate option, you do need to pump and dump for 24 hours. Misoprostol in both cases is fine. |
| We use misoprostol often for PPH and there's no effect that I've ever seen in the babies BF immediately afterward. The dosage for PPH is also much higher than is used for a medical AB. Thomas Hale's 2002 lists diarrhea as a theoretical risk of miso in infants, but quite honestly we generally don't even see it in the moms. A 72 hour pump and dump for miso seems excessive, since it's frequently given in labor and postpartum with no pump and dump required. |
