U.S. flag

An official website of the United States government

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-.

Cover of Drugs and Lactation Database (LactMed®)

Drugs and Lactation Database (LactMed®) [Internet].

Show details


Last Revision: October 31, 2018.

Estimated reading time: 1 minute

CASRN: 78439-06-2

Chemical structure

Drug Levels and Effects

Summary of Use during Lactation

Limited information indicates that ceftazidime produces low levels in milk that are not expected to cause adverse effects in breastfed infants. Occasionally disruption of the infant's gastrointestinal flora, resulting in diarrhea or thrush have been reported with cephalosporins, but these effects have not been adequately evaluated. Ceftazidime and is acceptable in nursing mothers.

Drug Levels

Maternal Levels. Ceftazidime 2 grams was given to 11 women intravenously every 8 hours for 5 days. The average trough milk level was 3.8 mg/L before the next dose, 5.2 mg/L 1 hour after the dose and 4.5 mg/L at 3 hours after the dose. These differences were not statistically significant. The average drug concentrations in milk were 3.9 mg/L for samples before the seventh dose and 4.9 mg/L in milk samples after the seventh dose, but this difference was not statistically significant. There was no correlation between the mother's weight and the ceftazidime milk levels.[1]

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.


Blanco JD, Jorgensen JH, Castaneda YS et al. Ceftazidime levels in human breast milk. Antimicrob Agents Chemother. 1983;23:479-80. [PMC free article: PMC184672] [PubMed: 6342531]

Substance Identification

Substance Name


CAS Registry Number


Drug Class

  • Breast Feeding
  • Anti-Infective Agents
  • Antibacterial Agents
  • Cephalosporins

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.

Copyright Notice

Attribution Statement: LactMed is a registered trademark of the U.S. Department of Health and Human Services.

Bookshelf ID: NBK501420PMID: 30000480


Related information

Similar articles in PubMed

  • Review Ceftazidime and Avibactam.[Drugs and Lactation Database (...]
    Review Ceftazidime and Avibactam.
    . Drugs and Lactation Database (LactMed®). 2006
  • Review Cefepime.[Drugs and Lactation Database (...]
    Review Cefepime.
    . Drugs and Lactation Database (LactMed®). 2006
  • Review Cefixime.[Drugs and Lactation Database (...]
    Review Cefixime.
    . Drugs and Lactation Database (LactMed®). 2006
  • Review Ceftizoxime.[Drugs and Lactation Database (...]
    Review Ceftizoxime.
    . Drugs and Lactation Database (LactMed®). 2006
  • Review Cefditoren.[Drugs and Lactation Database (...]
    Review Cefditoren.
    . Drugs and Lactation Database (LactMed®). 2006
See reviews...See all...

Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...