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Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006-.

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Drugs and Lactation Database (LactMed) [Internet].

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Abemaciclib

Last Revision: December 3, 2018.

CASRN: 1231929-97-7

Chemical structure

Drug Levels and Effects

Summary of Use during Lactation

No information is available on the clinical use of abemaciclib during breastfeeding. Because abemaciclib and its metabolites are over 90% bound to plasma proteins, the amount in milk is likely to be low. However, the manufacturer recommends that breastfeeding be discontinued during abemaciclib therapy and for 3 weeks after the final dose.

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

Abemaciclib

CAS Registry Number

1231929-97-7

Drug Class

  • Breast Feeding
  • Antineoplastic Agents
  • Enzyme Inhibitors
  • Protein Kinase Inhibitors
  • Signal Transduction 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.

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