Skip to Content
Learn how to prepare for Severe Allergy Attacks.

Azithromycin Pregnancy and Breastfeeding Warnings

Azithromycin is also known as: Azithromycin Dose Pack, Z-Pak, Zithromax, Zmax

Azithromycin Pregnancy Warnings

In one study comparing azithromycin and erythromycin, 15 pregnant women received one gram of azithromycin for the treatment of chlamydial infection. The period of gestation during which the drugs were given was not specified. Azithromycin was better tolerated than erythromycin, and no adverse fetal outcomes were reported.

Azithromycin has been assigned to pregnancy category B by the FDA. Animal studies failed to reveal evidence of fetotoxicity. There are no controlled data in human pregnancy. Azithromycin should only be given during pregnancy when benefit outweighs risk.

Azithromycin Breastfeeding Warnings

Azithromycin is excreted into human milk. The manufacturer recommends that caution be used when administering azithromycin to nursing women.

In one lactating woman receiving azithromycin 500 mg/day, azithromycin milk concentration measured 1.3 and 2.8 mcg/mL 1 hour after the first dose and 30 hours after the third dose, respectively.

See Also...

Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Wolters Kluwer Health and is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This drug information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2008 Multum Information Services, Inc. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist.