In: Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006.


No information is available on the clinical use of reslizumab during breastfeeding. Because reslizumab is a large protein molecule with a molecular weight of 147,000 Da, the amount in milk is likely to be very low.[1] It is also likely to be partially destroyed in the infant's gastrointestinal tract and absorption by the infant is probably minimal.[2] A task force respiratory experts from Europe, Australia and New Zealand found that reslizumab is possibly acceptable during breastfeeding.[3] Until more data become available, reslizumab should be used with caution during breastfeeding, especially while nursing a newborn or preterm infant. Waiting for at least 2 weeks postpartum to resume therapy may minimize transfer to the infant.[4]

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  • Review