• TRADE NAMES: Abaprim; Alprim; Bactin; Bactrim (Women First); Idotrim; Ipral; Lidaprim; Methoprim; Monotrim; Polytrim; Primosept; Primsol; Septra (Monarch); Syraprim; Tiempe; Trimopan; Triprim; Unitrim
  • INDICATIONS: Various urinary tract infections caused by susceptible organisms, acute otitis media in children, acute and chronic bronchitis
  • CLASS: Antibiotic, Antimicrobial
  • HALF-LIFE: 8–10 hours

Although trimethoprim has been known to elicit occasional adverse reactions by itself, it is most commonly used in conjunction with sulfamethoxazole (co-trimoxazole - see separate entry).

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Page last updated 07/31/2023

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Incidence

<1% 1‑5% 5‑10% 10‑15% 15‑20% 20‑30% >30%

Seriousness

Hospitalization possible
Life threatening
Fatal

Warnings in other populations

BreastfeedingBreast feeding

GeriatricGeriatric

PediatricPediatric