No information is available on the clinical use of aprocitentan during breastfeeding. Because aprocitentan is more than 99% bound to plasma proteins, the amount in milk is likely to be low. However, its half-life is 41 hours and it might accumulate in the infant. Because no information is available on the use of aprocitentan during breastfeeding, an alternate drug may be preferred, especially while nursing a newborn or preterm infant.