Has anyone been prescribed anti-d's while breast feeding? I have been offered them and told that the one they want to give me - Sertraline or something - has no known harmful effects on the baby, but then again, there hasn't been much research done. I don't know what to do. The other option would be to swap her to formula but that's easier said than done because she's never taken a bottle (is 19 weeks). I just don't know what to do.