Dosing Information

The dose of sulfamethoxazole/trimethoprim that your healthcare provider recommends will vary depending on a number of factors, including:
  • The type of infection and bacteria
  • Your height and weight (for some uses)
  • Other medical conditions you may have
  • Other medications you may currently be taking.
As is always the case, do not adjust your dose unless your healthcare provider specifically instructs you to do so.
(Click Sulfamethoxazole/Trimethoprim Dosage for more information.)

Drug Interactions

Sulfamethoxazole/trimethoprim can potentially interact with several other medications (see Drug Interactions With Sulfamethoxazole/Trimethoprim).

What If I Take an Overdose?

People who take an overdose may experience effects such as:
  • Loss of appetite
  • Abdominal pain
  • Nausea
  • Vomiting
  • Dizziness
  • Headache
  • Drowsiness
  • Unconsciousness
  • Fever
  • Blood in the urine
  • Yellow skin (jaundice)
  • Confusion.
If you happen to overdose on sulfamethoxazole/trimethoprim, seek medical attention immediately.
(Click Bactrim Overdose, Septra Overdose, or Sulfatrim Overdose for more information.)
7 Easy Tips for Starting Solids

Sulfamethoxazole Trimethoprim Information

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