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What Is Trimethoprim

Trimethoprim (TMP) is an antibiotic medication used to treat a wide range of infections, including urinary tract infections, bronchitis and sinus infections. It belongs to a class of drugs known as sulfonamides, which are similar to penicillin. Trimethoprim works by blocking essential biochemical pathways in bacteria that are needed for their growth, making it impossible for the bacteria to replicate and spread. Although Trimethoprim is used to treat many bacterial infections, it does not work for viral infections such as the common cold or flu.

How Does Trimethoprim Work?

Trimethoprim works by blocking the action of two essential enzymes, dihydrofolate reductase (DHFR) and dihydropteroate synthase (DHPS). These enzymes are required by bacteria to make proteins that allow them to survive and grow. By blocking these enzymes, Trimethoprim makes it impossible for the bacteria to replicate or spread, ultimately killing them off. In addition to its antibacterial effects, Trimethoprim can also reduce inflammation associated with some infections, such as pneumonia.

How to Take Trimethoprim

Trimethoprim is available as tablets, capsules or oral suspension, and is generally taken twice daily. It is important to take it exactly as prescribed by your doctor, and to continue taking it for the full course of treatment even if you feel better after a few days.
If you miss a dose, take it as soon as you remember. Do not take a double dose to make up for a forgotten dose.
Trimethoprim can interact with other medications and supplements, so make sure to tell your doctor about any other medications or supplements you are taking.

What Are The Side Effects Of Trimethoprim?

Like other medications, Trimethoprim can cause side effects in some people. The most common side effects include nausea, vomiting, diarrhea, and rash. Other possible side effects include headache, dizziness, and difficulty sleeping.

Most side effects are mild and don’t require any medical attention. However, if you experience any severe or persistent side effects, you should contact your doctor immediately. In very rare cases, Trimethoprim can cause a severe allergic reaction that requires medical attention.

How To Buy Trimethoprim Without Prescription

Trimethoprim is available by prescription only, so it can’t be purchased over the counter. However, there are some reputable online pharmacies where you can buy Trimethoprim without a prescription.

When buying Trimethoprim online, it’s important to make sure you use a reputable pharmacy. Do your research and look for reviews and customer feedback before making your purchase. You should also check that the pharmacy offers safe payment options and fast delivery.


In conclusion, Trimethoprim is an effective antibiotic that is used to treat a wide range of bacterial infections. It works by blocking essential pathways in bacteria that allow them to survive and replicate. Although Trimethoprim is available by prescription only, it can be bought online from some reputable pharmacies without a prescription. It is important to make sure you use a reputable pharmacy and read all the information provided before taking this medication.

Post Author: Nicolas

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