Co-Trimax Tablet 80mg / 400mg

About Co-Trimax Tablet 80mg / 400mg

Co-Trimax Tablet 80mg / 400mg Uses

• Urinary tract infections
• Respiratory tract infections
• Traveler's diarrhea and certain bacterial gut infections
• Ear infections
• Prevention and treatment of Pneumocystis pneumonia in at risk patients

Co-Trimax Tablet 80mg / 400mg Benefits

• Combines two antibiotics that work together for a stronger effect
• Affordable and widely available treatment option
• Effective against a broad range of common bacteria
• Useful both for treatment and for preventing certain infections in vulnerable patients

What Experts Say

Co-trimoxazole pairs trimethoprim and sulfamethoxazole, two drugs that block sequential steps in the folic acid pathway bacteria need to multiply. Blocking both steps together produces a stronger, more reliable antibacterial effect than either drug would achieve alone.

Physicians commonly choose this combination for uncomplicated urinary tract infections and certain respiratory infections because of its low cost and broad availability, while reserving it as a preventive treatment for Pneumocystis pneumonia in patients with weakened immunity. Doctors do watch closely for skin reactions and blood count changes, which are the most clinically significant risks associated with the sulfonamide component.

Given that urinary tract infections and Pneumocystis prevention in immunocompromised patients are both common concerns in Pakistani clinical practice, this remains one of the more frequently prescribed combination antibiotics, particularly where cost is an important consideration for patients.

Drug Class

• Combination Antibacterial (Folate Synthesis Inhibitor)

Co-Trimax Tablet 80mg / 400mg formula

• Trimethoprim + Sulfamethoxazole

Available forms

• Tablet

How to use Co-Trimax Tablet 80mg / 400mg?

• Take the tablet with a full glass of water.
• Take with food if it causes stomach upset.
• Drink plenty of fluids through the day while on this medicine.
• Complete the full course even if symptoms improve early.
• Take doses at evenly spaced times as advised by the doctor.

Drug Interactions

• Warfarin: Can significantly increase the blood thinning effect and raise bleeding risk.
• Methotrexate: Both medicines affect folate metabolism, so combined use increases the risk of methotrexate toxicity.
• Phenytoin: Co-trimoxazole can raise phenytoin blood levels, increasing the chance of side effects.
• ACE Inhibitors, ARBs, and Potassium Sparing Diuretics: Combined use can raise blood potassium to unsafe levels, particularly in older adults.
• Sulfonylurea Diabetes Medicines: Can enhance the blood sugar lowering effect and increase the risk of low blood sugar.

Risks and warnings

• Sulfa Allergy: Avoid if there is a known allergy to sulfonamide medicines.
• Kidney Or Liver Disease: Requires dose adjustment or caution since both organs are involved in clearing the drug.
• Blood Disorders: Can rarely affect blood cell counts, so it is used cautiously in people with existing blood conditions.
• Pregnancy: Should be avoided, especially near the end of pregnancy, due to risk to the baby.
• Severe Skin Reactions: Stop the medicine and seek care immediately if a widespread rash, blistering, or peeling of the skin develops.

Co-Trimax Tablet 80mg / 400mg Side Effects

• Nausea or vomiting
• Loss of appetite
• Skin rash
• Increased sensitivity to sunlight
• Headache
• Diarrhea
• Rare severe skin reactions such as Stevens-Johnson syndrome
• Rare changes in blood cell counts

Storage Conditions

• Store below 25°C in a cool, dry place.
• Keep the strip in its original packaging away from moisture.
• Protect from direct sunlight.
• Keep out of reach of children.
• Discard any unused tablets once the prescribed course is finished.