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Sulfamethoxazole Trimethoprim

Sulfamethoxazole Trimethoprim

Descriptions

Sulfamethoxazole and trimethoprim combination is used to treat infections such as urinary tract infections, middle ear infections (otitis media), bronchitis, traveler's diarrhea, and shigellosis (bacillary dysentery). This medicine is also used to prevent or treat Pneumocystis jiroveci pneumonia or Pneumocystis carinii pneumonia (PCP), a very serious kind of pneumonia. This type of pneumonia occurs more commonly in patients whose immune systems are not working normally, such as cancer patients, transplant patients, and patients with acquired immune deficiency syndrome (AIDS).

How To Use

Take this medication by mouth, as directed by your doctor, with a full glass of water (8 ounces / 240 milliliters). If stomach upset occurs, take with food or milk. Drink plenty of fluids while taking this medication to lower the unlikely risk of kidney stones forming, unless your doctor advises you otherwise. Dosage is based on your medical condition and response to treatment.

For the best effect, take this antibiotic at evenly spaced times. To help you remember, take this medication at the same time(s) every day.

How do Sulfamethoxazole and Trimethoprim Tablets (SMZ-TMP) work?

Sulfamethoxazole is a sulfonamide antibiotic that limits the growth of bacteria. Sulfonamides inhibit synthesis of folic acid, important to bacterial DNA synthesis. Trimethoprim works by starving the bacteria of nucleotides necessary for DNA replication.

How should I take sulfamethoxazole and trimethoprim?

Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

Shake the oral suspension (liquid) well just before you measure a dose. Measure the liquid with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Precautions

Before taking sulfamethoxazole with trimethoprim, tell your doctor or pharmacist if you are allergic to sulfa medications or trimethoprim; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:

  • kidney disease
  • liver disease
  • certain blood disorders (such as porphyria, anemia due to folate vitamin deficiency)
  • history of blood disorders caused by trimethoprim or sulfa medications
  • vitamin deficiency (folate or folic acid)
  • severe allergies
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