Sofosbuvir/Velpatasvir Concentrations in the Breastmilk of Postpartum Women with Opioid Use Disorder Receiving Treatment for Hepatitis C Virus: a pharmacokinetic study.

Chappell, Catherine A; Brooks, Kristina M; Kiser, Jennifer J; Klein, Brandon; Nerguizian, David; Bushman, Lane; Laird, Hollis J; Stewart, Ellen et al. · Clin Infect Dis · 2025

case_series · Level IV

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Abstract

In this breastmilk pharmacokinetic study of women undergoing hepatitis C virus treatment with sofosbuvir/velpatasvir, sofosbuvir, GS-331007 (sofosbuvir metabolite), and velpatasvir concentrations in breast milk were 13%, 1.2%, and 41% of maternal plasma concentrations, respectively. The estimated infant daily dose from breastmilk was <1% of the weight-adjusted dose for children.