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Sulfamethoxazole

Sulfamethoxazole (Bactrim) is an antibiotic used mainly for urinary tract infections. It also treats pneumocystis pneumonia and shigellosis. This page covers the one listed formulation: Bactrim tablets.

Bactrim

Urinary Tract Infections, Pneumocystis Pneumonia

400mg + 80mg · 800mg + 160mg

A sulfamethoxazole and trimethoprim combination for urinary tract infections and pneumocystis pneumonia. Each ingredient blocks a different step in the same pathway.

From$0.61/ tabletView

Key points

  • Sulfamethoxazole is listed here as Bactrim, a combination with trimethoprim (co-trimoxazole).
  • Bactrim is the originator brand from Roche for this combination.
  • Bactrim tablets come in two strengths: 400mg/80mg and 800mg/160mg of sulfamethoxazole and trimethoprim.

How sulfamethoxazole works

Sulfamethoxazole and trimethoprim block two different steps in the same bacterial pathway, stopping bacteria from making folate, a nutrient they need to grow.

Further reading