Azithromycin Safe in Pregnancy

Status

caution Last reviewed: 2026-05-16 · Confidence: moderate

Reason

Official labeling does not show a clear pregnancy harm signal, but pregnancy data are limited and use should be based on need.

Drug Information

Brand Name
Zithromax
Generic Name
azithromycin
Drug Class
macrolide antibiotic
FDA Category
N/A (PLLR narrative label)
Rx Status
prescription

Safe Amount

Dosage must be determined by your provider based on individual risk/benefit.

Effects

Pregnancy
Use only when the expected benefit justifies the possible risk. Data are limited and confounding is a concern.
Mother
May cause usual azithromycin side effects such as stomach upset or allergic reaction; treatment should be reviewed if you are pregnant and have an infection.
Baby
Published data and FDA labeling do not show an increased risk of major birth defects, miscarriage, or other adverse fetal outcomes; some studies have reported possible risks, but findings are not conclusive.

Trimester Notes

1st Trimester
No clear increase in major birth defects has been identified in official labeling, but first-trimester data are limited.
2nd Trimester
No trimester-specific warning is listed in FDA labeling; provider review is still recommended before use.
3rd Trimester
No trimester-specific warning is listed in FDA labeling, but use should still be based on need and provider review.

Risk-Benefit Note

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Conditions & Warnings

  • Consult OB/GYN or prescriber
  • Do not stop or continue a prescription antibiotic without provider review
  • Use the exact dose and course prescribed

Alternatives

  • Amoxicillin if appropriate for the infection
  • Cephalexin if appropriate for the infection
  • Ask your OB/GYN or prescriber for the best pregnancy-compatible option

References

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