frequent bloodwork and adjustment of medication dosage to find and maintain an appropriate level. Stopping lithium requires slow and gradual discontinuation; sudden removal of the medication may lead to symptom relapse and suicidal thoughts. Benzodiazepines Benzodiazepines are a class of drug commonly used for anxiety disorders and insomnia, though it also plays a role as an additive medication for psychosis and delirium. According to a small study of 64 women, benzodiazepines had a minor but positive effect in reducing psychosis as a sequentially added medication for treatment of PPP (on top of lithium and antipsychotic medications); with little supportive data, benzodiazepines are currently only recommended as an add-on medication to lithium and/or antipsychotic drugs, usually in the setting of continued sleep disturbance despite the use of the other medications. Antipsychotic Medications Antipsychotic medications are the preferred class of drug used to treat general psychosis, including schizophrenia spectrum disorders. Few studies provide evidence for the efficacy of antipsychotic use in PPP, with the exception of one study of 64 women which examined antipsychotic use as a drug by itself and combined with lithium. In this study, antipsychotic use was effective in both scenarios, but not as effective as lithium used by itself. Despite this limited evidence in PPP specifically, current recommendations include antipsychotic use as an additional medication for patients receiving lithium, or antipsychotic use on its own for those who are unable to tolerate lithium. Treatment guidance is largely based on recommendations and data from patients with schizophrenia who become pregnant. First-generation antipsychotics have a longer history of use, efficacy and safety in pregnancy, particularly chlorpromazine and haloperidol. Still, second-generation antipsychotics may be preferred over first-generation antipsychotics due to the reduced risk for extrapyramidal symptoms (e.g., uncontrollable movements, tremors or muscle contractions), but given a large number of available medications in this class and their nuanced effects, antipsychotic choice is physician- and case-dependent. Breastfeeding Disruption of continued contact with the infant may occur during hospitalization and treatment, which may impact breastfeeding capacity; hospital units may provide the use of a breast pump to mitigate this concern. Strategies and concerns should also be discussed regarding breastfeeding and its impact on sleep, as poor sleep related to night feedings may worsen or delay patient recovery; alternatives may include social support and bottle-feeding through the night to allow the patient time for adequate rest. The effects of various medications during breastfeeding are poorly