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Attribution Statement: LactMed is a registered trademark of the U.S. Department of Health and Human Services.
Bookshelf ID: NBK500852PMID: 29999911
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-.
CASRN: 184475-35-2
Drug Levels and Effects
Summary of Use during Lactation
No information is available on the clinical use of gefitinib during breastfeeding. Because gefitinib is 90% bound to plasma proteins, the amount in milk is likely to be low. However, its half-life is about 48 hours and it might accumulate in the infant. The manufacturer recommends that breastfeeding be discontinued during gefitinib therapy.
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.
Substance Identification
Substance Name
Gefitinib
CAS Registry Number
184475-35-2
Drug Class
- Breast Feeding
- Lactation
- Antineoplastic Agents
- Enzyme Inhibitors
- Protein Kinase Inhibitors
- Signal Transduction Inhibitors
- Tyrosine Kinase Inhibitors
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.