Good news reported by MGH blog regarding the use of benzodiazepines during breastfeeding. Research is supporting the use of benzos (ativan, xanax, klonopin) during lactation with a low risk for side effects. They emphasize that infants should be monitored and that sedation may occur but that the overall risk is low. This is important information since PPD is so often associated with high levels of distress and many moms may understandably be concerned about using medication during that time. Benzodiazepines can provide rapid, short-term relief for some debilitating symptoms.
Kelly L, Poon S, Madadi P, Koren G. Neonatal Benzodiazepines Exposure during Breastfeeding. J Pediatr. 2012