May 27 2022


There are a limited number of publications on the use of bretylium during breastfeeding, so it is preferable to use other drugs.

Despite having a limited oral bioavailability, extreme caution should be taken when administered to a mother who breastfeeds exclusively her child , including control of bretylium levels in the baby's blood.

It has been published a case report in a patient that received bretylium tosylate during pregnancy and after birth. The baby did not show any disorder [1].


1.Oral bretylium tosylate use during pregnancy and subsequent breastfeeding: a case report. Gutgesell M, Overholt E, Boyle R. Am J Perinatol. 1990 Apr;7(2):144-5.

Warning of the manufacturer:

It is not known whether if bretylium it is excreted in human milk. Therefore, breastfeeding is not recommended during treatment with this drug.