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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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Mometasone, Nasal

Last Revision: November 15, 2021.

Estimated reading time: 1 minute

CASRN: 105102-22-5

image 135079338 in the ncbi pubchem database

Drug Levels and Effects

Summary of Use during Lactation

Neither inhaled mometasone nor mometasone nasal implants have been studied during breastfeeding. Although not measured, the amounts of inhaled and nasal corticosteroids absorbed into the maternal bloodstream and excreted into breastmilk are probably too small to affect a breastfed infant. Expert opinion considers inhaled and oral corticosteroids acceptable to use during breastfeeding.[1,2] See also Mometasone, Topical.

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

None reported with any corticosteroid.

Effects on Lactation and Breastmilk

Relevant published information was not found as of the revision date.

Alternate Drugs to Consider

(Inhaled) Beclomethasone, Budesonide


National Heart, Lung, and Blood, Institute, et al. NAEPP expert panel report. Managing asthma during pregnancy: recommendations for pharmacologic treatment-2004 update. 2004:1-57. http://www​.nhlbi.nih​.gov/health/prof/lung/asthma/astpreg.htm. [PubMed: 15637545]
Middleton PG, Gade EJ, Aguilera C, et al. ERS/TSANZ Task Force Statement on the management of reproduction and pregnancy in women with airways diseases. Eur Respir J. 2020;55:1901208. [PubMed: 31699837]

Substance Identification

Substance Name

Mometasone, Nasal

CAS Registry Number


Drug Class

Breast Feeding


Anti-allergic Agents

Anti-Asthmatic Agents

Corticosteroids, Inhaled


Anti-Inflammatory 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.


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