This is a depressing story. It seems some common antidepressant drugs can cause "delayed secretory activation," or a delay in starting milk production, because of their effects on seratonin production.
Oh, great. Mom has post-partum depression, her boobs hurt, her nether parts hurt, and now she's a bad mom because she can't give milk. In that condition, she has to decide whether to take her meds or feed her baby.
The abstract conclusion says "Mothers taking serotonergic drugs may need additional support to achieve their breastfeeding goals." I'd be all in favor of that, but I don't know what that support would be.