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Primary Uses

Bacterial infection


This medicine is indicated in infections of skin and respiratory, gastro-intestinal and urinary tracts.

Side Effects

Patients using this medication may at times experience nausea, vomiting, glossitis (enlarged tongue), and skin rashes. If you experience any of these symptoms for a long period of time, consult your doctor immediately.



This medicine should not be used during pregnancy.


This medicine should not be used by breastfeeding mothers.


This medicine should be used with extreme caution in elderly and patients with impaired renal (kidney) function, and severe allergy or asthma.


This medicine should not be used in new borns and patients suffering from severe renal (kidney) or hepatic (liver) insufficiency.


How long does it take for trimethoprim to start working?

It starts working soon after it is taken.

What is this medicine used for?

It is used to treat bacterial infections.

Any safety measures or special instructions that are to be followed while using this medicine?

Make sure you drink plenty of water and keep yourself hydrated all the time and also in case of overdose, withdraw the medicine’s use and report to a nearby facility immediately.

What should be done if the temporary side effects like rash and itching would not go off?

You are advised to consult your physician right away and get an alternate medicine.

With the symptoms going away, are we safe to stop using the medicine?

No, you are not. Make sure to complete the entire dose as per your physician’s advice. If not done otherwise would result in infection relapse.

What is sulfamethoxazole used for?

It is used to treat various bacterial and parasitic infections.

What should be done to overcome its side effects?

You are advised to maintain a healthy and balanced diet and ensure you stay hydrated all the time through fluids and water.

What should people who are allergic to this medicine do?

Such patients are advised to use an alternate antibiotic, but only under the recommendation and consultation of a clinician.

Which age group is contraindicated the use of trimethoprim?

Those under 2 months of age are strictly supposed to avoid this medicine.

Is it safe for the use of pregnant and lactating females?

No, it is not.

Why is it advised to have the entire course finished even when the condition from infection starts to improve?

This is so because the symptoms although starts to go off early but it takes a little longer for the infections to completely remove from the body.


Dawaai's intention is to make sure that it's consumers get information that is accurate, reviewed by an expert and error-free. However, the information mentioned here should not be used as a replacement for the advice of a qualified physician. The information given here is for informational purposes only, which may not cover all possible precautions, side effects, contraindications or drug interactions. Consult your doctor and discuss your queries related to any medicine or disease.


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