Polymyxin B and Breastfeeding

Summary of use during lactation

Because it is poorly absorbed after topical application, polymyxin B is considered a low risk to the nursing infant.[1] Only water-miscible cream or gel products should be applied to the breast because ointments may expose the infant to high levels of mineral paraffins via licking.[2]

Drug levels in milk and infant serum

Maternal Levels. Relevant published information was not found as of the revision date. Infant Levels. Relevant published information was not found as of the revision date.

Effects in breastfed infants

Relevant published information was not found as of the revision date.

Effects on lactation and breastmilk

Relevant published information was not found as of the revision date.

Alternative drugs to consider

Clindamycin, Mupirocin

References

1. Leachman SA, Reed BR. The use of dermatologic drugs in pregnancy and lactation. Dermatol Clin 2006;24:167-97.16677965 PubMed
2. Noti A, Grob K, Biedermann M, et al. Exposure of babies to C(15)-C(45) mineral paraffins from human milk and breast salves. Regul Toxicol Pharmacol 2003;38:317-25.14623482 PubMed