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Trimethoprim FAQ


What is Trimethoprim used for?

Trimethoprim is used to treat urinary tract infections, middle ear infections, bronchitis, traveler's diarrhea, and Pneumocystis jiroveci pneumonia.

How does Trimethoprim work?

Trimethoprim works by stopping the growth of bacteria, thereby treating the bacterial infection.

What are the common side effects of Trimethoprim?

Common side effects may include nausea, vomiting, loss of appetite, and skin rash. Consult your doctor if any of these side effects persist.

Can I drink alcohol while taking Trimethoprim?

It is best to avoid alcohol while taking Trimethoprim as it may increase the risk of side effects such as nausea and dizziness.

Is Trimethoprim safe to take during pregnancy?

It is important to consult your doctor before taking Trimethoprim during pregnancy to weigh the benefits and risks, especially during the first trimester.

Can Trimethoprim be taken with other medications?

Inform your doctor about all the medications you are taking to avoid potential interactions with Trimethoprim.

What is the typical dosage of Trimethoprim for UTI?

The typical adult dose for treating urinary tract infections is 100 mg twice a day for 10 days.

Is Trimethoprim effective for traveler's diarrhea?

Yes, Trimethoprim can be effective in treating traveler's diarrhea caused by susceptible strains of bacteria.

How long does it take for Trimethoprim to work?

Improvement in symptoms can be seen within a few days of starting Trimethoprim. However, continue the full course as prescribed by your doctor.

Can Trimethoprim cause allergic reactions?

Allergic reactions to Trimethoprim are rare but can occur. Seek immediate medical attention if you experience any signs of an allergic reaction.

Is Trimethoprim the same as sulphamethoxazole?

Trimethoprim is often combined with sulphamethoxazole to form the antibiotic co-trimoxazole, which is used to treat a wider range of infections.

What should I do if I miss a dose of Trimethoprim?

Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and continue with the regular schedule.

Can Trimethoprim lead to antibiotic resistance?

Using Trimethoprim as prescribed by your doctor and completing the full course as directed helps reduce the risk of antibiotic resistance.

Can I drive or operate machinery while taking Trimethoprim?

Trimethoprim may cause dizziness. It is advisable to assess how Trimethoprim affects you before operating machinery or driving.

Is Trimethoprim available over the counter?

No, Trimethoprim requires a prescription from a healthcare professional before it can be obtained from a pharmacy.

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