Abstract
Bipolar disorder is a chronic and severe psychiatric illness affecting many patients during their childbearing years. Bipolar disorder is often managed with aripiprazole, a generally well tolerated second-generation antipsychotic medication. Published data regarding its safety profile are reassuring and aripiprazole is prescribed during pregnancy, postpartum and during lactation. Pregnancy and the postpartum period represent times of increased vulnerability for patients with bipolar disorder, especially those who are untreated, highlighting the need for medical management. However, aripiprazole may interfere with human milk production. Currently, there is limited evidence to understand lactation failure in patients who take aripiprazole. This case reinforces the need for shared decision making regarding the potential impact on lactation when aripiprazole is being considered for the pregnant patient with bipolar disorder.