Safely Buy Bactrim ( Sulfamethoxazole Trimethoprim ) from Canada Prescriptions Plus.

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Sulfamethoxazole Trimethoprim

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Formulation : Tablet
Drug Name Dosage Quantity Price Buy Now
Sulfamethoxazole Trimethoprim 400/80mg 100 $30.40 Add To Cart
Sulfamethoxazole Trimethoprim
Dosage: 400/80mg
Quantity: 100
Price: $30.40


Bactrim is an antibiotic medication used to treat bacterial infections including urinary tract infections, middle ear infections, bronchitis, traveler’s diarrhea, shigellosis, and pneumonia.

This medication combines two antibiotics: sulfamethoxazole and trimethoprim. Both active ingredients inhibit bacterial synthesis of specific acids that result in bacterial infections of the genitourinary, respiratory, and gastrointestinal tracts. Bactrim combines sulfamethoxazole and trimethoprim to help reduce resistance to either antibiotic.

Uses and Dosages

The dosage prescribed for this medication varies depending on the individual and the infection needing treatment.

  • Can be taken with or without food
  • Adults typically take one tablet every 12 hours
  • Stay hydrated while taking Bactrim
  • Store in a cool, dry place away from children

If you miss a dose, take it as soon as you can but do not double dose.

Side Effects

Bactrim may cause some side effects while treating bacterial infections. Speak with your doctor for advice concerning any side effects you may encounter.

Common Bactrim side effects include:

  • Nausea
  • Vomiting
  • Loss of appetite
  • Skin rash

Serious Side Effects

While less common, some serious side effects may occur.

Serious side effects include:

  • Severe stomach pain
  • Watery or bloody diarrhea (even if months after last dose)
  • Any quality of skin rash
  • Yellowing of skin or eyes
  • Seizure
  • New or unusual joint pain
  • Increased or decreased urination
  • Increased thirst, dry mouth, or fruity breath odor
  • New or worsening cough, fever, or trouble breathing
  • High blood potassium (nausea, weakness, tingly feeling, chest pain, irregular heartbeat, loss of movement)
  • Low blood sodium (headache, confusion, brain fog, weakness)
  • Low blood cell counts (fever, chills, mouth sores, skin sores, easy bruising, unusual bleeding, pale skin, cold hands and feet, light-headedness, shortness of breath)

If you notice any of the above, call your doctor immediately.

Allergic Reactions

Do not take Bactrim if you are allergic to sulfamethoxazole or trimethoprim. Stop using and seek emergency medical help if you develop an allergic reaction.

Symptoms of an allergic reaction to Bactrim may include:

  • Hives
  • Cough
  • Chest pain
  • Shortness of breath
  • Swelling in face or throat
  • Fever
  • Sore throat
  • Burning eyes
  • Skin pain
  • Red or purple rash with peeling blisters


If you have severe liver disease, unmonitored kidney disease, anemia from folic acid deficiency, or if you take dofetilide, you should avoid using Bactrim.

You should also avoid Bactrim if you are pregnant or breastfeeding. This medication also reduces the efficacy of birth control pills; consult with your doctor for other methods and options while taking Bactrim.

When taking Bactrim, your skin may burn more easily. Avoid direct sun and tanning beds and wear protective clothing as well as sunscreen when outside.

If you take other medications, Bactrim may affect their effectiveness and/or cause serious side effects. Consult with your doctor about any medications you take but especially the following:

  • Warfarin sodium
  • Methotrexate
  • Phenytoin
  • Digoxin
  • Sulfonylureas
  • Procainamide hydrochloride

Form and Strength

Bactrim (Sulfamethoxazole Trimethoprim) is available in tablet form.

Each tablet contains the following strengths:

  • 400mg sulfamethoxazole
  • 80mg trimethoprim

The Bactrim tablets are available in quantities of 100.


Can you take Bactrim if you’re allergic to penicillin?

Yes, Bactrim contains sulfamethoxazole and trimethoprim which are not related to the penicillin class of antibiotics. Instead, these antibiotics belong to a sulfonamides drug class.

How do the sulfonamides in Bactrim kill bacteria?

Bactrim combines two sulfonamide antibiotics, sulfamethoxazole and trimethoprim, that inhibit the growth of bacteria that cause infections.

How long does Bactrim stay in your system?

Bactrim usually stays in your system for about two days after it is taken. The length, however, does vary depending on age, diet, weight, medical conditions, and whether other medications are taken at the same time.



Additional information

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Scientific Name:

Sulfamethoxazole Trimethoprim

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