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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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Varenicline

Last Revision: July 19, 2021.

Estimated reading time: 1 minute

CASRN: 249296-44-4

image 135126373 in the ncbi pubchem database

Drug Levels and Effects

Summary of Use during Lactation

Varenicline is a partial nicotine agonist used to assist smoking cessation. One researcher points out that based on animal data on nicotine, varenicline might interfere with normal infant lung development and recommends against its use in nursing mothers.[1] Because no information is available on the use of varenicline during breastfeeding, an alternate drug is preferred, especially while nursing a newborn or preterm infant.[2] If a mother chooses to breastfeed while taking varenicline, she should monitor her infant for seizures and excessive vomiting.

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

(Smoking Cessation) Bupropion

References

1.
Maritz GS. Are nicotine replacement therapy, varenicline or bupropion options for pregnant mothers to quit smoking? Effects on the respiratory system of the offspring. Ther Adv Respir Dis. 2009;3:193–210. [PubMed: 19706643]
2.
McAllister-Williams RH, Baldwin DS, Cantwell R, et al. British Association for Psychopharmacology consensus guidance on the use of psychotropic medication preconception, in pregnancy and postpartum 2017. J Psychopharmacol. 2017;31:519–52. [PubMed: 28440103]

Substance Identification

Substance Name

Varenicline

CAS Registry Number

249296-44-4

Drug Class

Breast Feeding

Lactation

Nicotinic Agonists

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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