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Trimethoprim

Trimethoprim is an antibiotic used for selected susceptible bacterial infections. It can raise potassium and affect folate-dependent blood-cell production.

Bactrim

Bacterial Infection

400/80 · 800/160mg

Trimethoprim tablets at 400/80mg and 800/160mg, used for bacterial infection. It interrupts bacterial folic acid synthesis, halting growth.

From$0.34/ tabletView

Key points

  • It does not treat viral illness and resistance patterns affect suitability.
  • Kidney impairment and potassium-raising medicines increase hyperkalaemia risk.
  • Pregnancy or folate deficiency requires specific clinical review.

Listings are for comparison only; suitability and supply depend on infection, susceptibility, prescription and pharmacy checks.

Important safety checks

Review kidney disease, high potassium, blood disorders, pregnancy, folate status and medicines such as potassium-sparing treatments, methotrexate or anticoagulants.

When to seek urgent care

Seek urgent help for severe weakness, a new irregular heartbeat, unusual bruising, fever with sore throat, blistering skin, facial swelling, breathing difficulty or severe bloody diarrhoea.

Further reading