Minimal information exists on the use of ethionamide during breastfeeding. Although some developmental problems have been reported in two infants exposed to ethionamide in breastmilk, their mothers were also exposed to several drugs during pregnancy and during breastfeeding, so the problems cannot necessarily be attributed to ethionamide. If ethionamide is required by the mother of an older infant, it is not a reason to discontinue breastfeeding, but until more data become available, an alternate drug may be preferred, especially while nursing a newborn or preterm infant.
关于乙硫异烟胺在母乳喂养期间的使用，现有信息极少。虽然有报道称两名婴儿通过母乳接触乙硫异烟胺后出现了一些发育问题，但他们的母亲在孕期和哺乳期还接触了多种药物，所以这些问题不一定归因于乙硫异烟胺。如果较大婴儿的母亲需要使用乙硫异烟胺，这并非停止母乳喂养的理由，但在有更多数据可用之前，可能更倾向于选择替代药物，尤其是在喂养新生儿或早产儿期间。
