Home For Providers Our Story Launch App
← All Medications

For educational purposes only — always consult your healthcare provider.

Trimethoprim-Sulfamethoxazole

Bactrim, Septra

Use With Caution While Breastfeeding

Trimethoprim-Sulfamethoxazole is generally considered safe for use during breastfeeding in healthy, full-term infants over 2 months old. Caution is advised for jaundiced, ill, stressed, or premature infants.

Prescription · Source: NIH LactMed®, Mar 2025

Need more information before deciding?

  • 💊 Safer alternatives to consider
  • 🔬 Why this rating — the full evidence
  • 👶 Infant side effects to watch for
  • 🍼 Effect on milk supply
Open LactSafe →

Free · No account required