I used it for birth control. I was on the lowest dose possible, but I am a petite, small woman so it is possible that the lowest dose isn't as small for me (92lbs) as it would be for an average woman (125-150). It is kind of odd too, my doctor recommended this pill to help produce milk while breastfeeding...but what I read seems to suggest the opposite. We actually began having feeding problems with my daughter shortly after I started taking the pill but never thought the pill could be the problem. Once we switched her to formula she was as happy as a button. We are pretty sure that did not contribute to her death (SIDS). She was on her tummy and they think the quick change from BM to formula could have stressed her body enough to potentially shut down. We probably will never know.