CASRN: 2423948-94-9; 2423943-37-5
Drug Levels and Effects
Summary of Use during Lactation
The distribution of etesevimab and bamlanivimab was stopped in June of 2021 because of a lack of efficacy against COVID-19 variants. Etesevimab and bamlanivimab are monoclonal antibodies directed against the SARS-CoV-2 virus that causes COVID-19. No information is available on their clinical use during breastfeeding. Because etesevimab and bamlanivimab are large protein molecules with molecular weights of 146,000 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]
Drug Levels
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.
Alternate Drugs to Consider
References
- 1.
- Stratigakis A, Paty D, Zou P, et al. A regression approach for assessing large molecular drug concentration in breast milk. Reprod Breed 2023;3:199-207. doi:10.1016/j.repbre.2023.10.003 [CrossRef]
- 2.
- Anderson PO. Monoclonal antibodies during breastfeeding. Breastfeed Med 2021;16:591-3. [PubMed: 33956488]
Substance Identification
Substance Name
Etesevimab
CAS Registry Number
2423948-94-9
Drug Class
Breast Feeding
Lactation
Milk, Human
Antibodies, Monoclonal
Antibodies, Viral
Antiviral Agents
Disclaimer: Information presented in this database is not meant as a substitute for professional judgment. You should consult your healthcare provider for breastfeeding advice related to your particular situation. The U.S. government does not warrant or assume any liability or responsibility for the accuracy or completeness of the information on this Site.
Publication Details
Publication History
Last Revision: November 15, 2023.
Copyright
Attribution Statement: LactMed is a registered trademark of the U.S. Department of Health and Human Services.
Publisher
National Institute of Child Health and Human Development, Bethesda (MD)
NLM Citation
Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-. Etesevimab and Bamlanivimab. [Updated 2023 Nov 15].