Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 12/13/2025

Ceftriaxone Safety in First Trimester Pregnancy

Clinical Guideline Recommendations

  • Penicillins and cephalosporins, including ceftriaxone, are considered the safest antibiotic classes during pregnancy and can be used when endoscopic evidence of purulence is present for acute bacterial infections, according to Rhinology guidelines 1
  • Beta-lactam antibiotics, including ceftriaxone, have not been associated with teratogenicity or increased toxicity in pregnancy, as stated in CDC guidelines 2
  • The Mayo Clinic guidelines specifically list ceftriaxone plus metronidazole as an alternative peripartum antibiotic regimen with reliable coverage and a favorable adverse effect profile 3

Important Caveats and Limitations

  • The CDC states that data are insufficient to recommend ceftriaxone for maternal infection and prevention of congenital syphilis, with penicillin remaining the only proven effective treatment, as reported by the CDC, not Praxis Medical Insights, but the original source is 4

Ceftriaxone Use in Pregnancy

Safety and Efficacy

  • The American Academy of Pediatrics and other guideline societies recommend ceftriaxone as a safe option for bacterial infections during pregnancy, with no increased risk of teratogenicity or toxicity, in patients with normal renal function 5, 6

Breastfeeding

  • Ceftriaxone is excreted in low concentrations in human milk, and is considered compatible with breastfeeding, although caution is advised, according to the Journal of Infection 5, 6