Drug Levels and Effects:

Summary of Use during Lactation:

If triamterene is required by the mother, it is not a reason to discontinue breastfeeding. However, because no information is available on the use of triamterene during breastfeeding, an alternate drug may be preferred.

Drug 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.

Possible Effects on Lactation:

Intense diuresis can suppress lactation;[1][2] however, it is unlikely that triamterene alone is sufficiently potent to cause this effect.

Alternate Drugs to Consider:



1. Healy M. Suppressing lactation with oral diuretics. Lancet. 1961;277:1353-4.
2. Cominos DC, Van Der Walt A, Van Rooyen AJ. Suppression of postpartum lactation with furosemide. S Afr Med J. 1976;50:251-2. PMID:3858

Substance Identification:

Substance Name:


CAS Registry Number:


Drug Class:

  • Diuretics

  • Administrative Information:

    LactMed Record Number:


    Last Revision Date:

    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.