Contraindications. There are no contraindications for the use of brexanolone in adults with PPD.
End-stage renal disease (ESRD). Avoid using brexanolone in patients with ESRD because of the potential accumulation of the solubilizing agent, betadex sulfobutyl ether sodium.
Pregnancy. Brexanolone has not been studied in pregnant patients. Pregnant women and women of reproductive age should be informed of the potential risk to a fetus based on data from other drugs that enhance GABAergic inhibition.
Breastfeeding. There are no data on the effects of brexanolone on a breastfed infant. Breastfeeding should be a discussion of risk and benefit between the patient and her doctor. The developmental and health benefits of breastfeeding should be considered, along with the mother’s clinical need for brexanolone and any potential adverse effects on the breastfed child from brexanolone or from the underlying maternal condition. However, based on the low relative infant dose (<2%) and the low oral bioavailability in adults, the risk to breastfed infants is thought to be low.16
Potential for abuse. Brexanolone injection is a Schedule IV controlled substance. Although it was not possible to assess physical dependency in the registrational trials due to dose tapering at the end of treatment, clinicians should advise patients about the theoretical possibility for brexanolone to be abused or lead to dependence based on other medications with similar primary pharmacology.
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