Wow wheen it rains it pours. I have another mom with low milk supply and slow gaining baby. She was taking the oral contraceptive Allesse or Alesse.(she wasn't sure of the spelling and I don't dabble in BCP) I have read that BCP's containing estrogen can lower milk supply in some women. What I would like to know is, is this irreversible or can a mom build up her supply using all the standard techniques after discontinuing their use? What about switching to a progestin only pill? Thanks for all the help. Tracy Kirschner, DC LLLL Boulder, CO