I've run a quick search on seroquel and bf. The drug passes into breastmilk in some animals. It is unknown whether it does in humans. Information on the web is conflicting. http://www.drugsdb.com/rx/seroquel/s...breastfeeding/ says that at 400mg there are no adverse effects in the baby, and you are taking far less. At the same time they advise against it. I dunno. Research the subject more. How little is the baby?