Cotri Tablet 80mg/400mg

About Cotri Tablet 80mg/400mg

Cotri Tablet 80mg/400mg Uses

• Urinary tract infections
• Acute bronchitis and other respiratory tract infections
• Middle ear infections (otitis media)
• Traveler's diarrhea
• Shigellosis and other bacterial gut infections
• Prevention and treatment of Pneumocystis pneumonia in at risk patients

Cotri Tablet 80mg/400mg Benefits

• Covers a broad range of common bacteria in a single tablet
• Affordable compared to many newer antibiotics
• Convenient twice daily dosing improves adherence
• Useful backup option when first line antibiotics fail

What Experts Say

Co-trimoxazole pairs sulfamethoxazole and trimethoprim, two agents that block sequential steps in bacterial folate synthesis. This dual blockade produces a synergistic bactericidal effect against many gram-positive and gram-negative organisms, including several strains that resist single-agent sulfonamide therapy alone.

Clinical guidelines still support this combination for uncomplicated urinary tract infections, acute otitis media, traveler's diarrhea, and Pneumocystis jirovecii pneumonia prophylaxis in immunocompromised patients. Rising resistance in some bacterial strains means local susceptibility patterns should guide first line antibiotic selection for skin and respiratory infections.

Careful patient selection remains essential for safe use. Renal function, hydration status, and any medication that raises potassium or suppresses bone marrow should be reviewed before starting therapy. Patients need clear counseling on finishing the full course, staying well hydrated, and reporting any new rash or fever promptly.

Drug Class

• Sulfonamide Antibiotic
• Folate Antagonist Combination

Cotri Tablet 80mg/400mg formula

• Sulfamethoxazole + Trimethoprim

Available forms

• Tablet

How to use Cotri Tablet 80mg/400mg?

• Take this tablet by mouth with a full glass of water.
• Take it after a meal to reduce stomach upset.
• Complete the full course as prescribed, even if symptoms improve early.
• Take doses at evenly spaced intervals, usually every 12 hours.
• Do not skip or double up on a missed dose.
• Drink extra fluids during the course to support kidney function.

Drug Interactions

• Warfarin: Cotri can raise bleeding risk by increasing warfarin's blood thinning effect.
• Methotrexate: Combined use raises the risk of methotrexate toxicity and bone marrow suppression.
• ACE Inhibitors And ARBs: Combined use raises the risk of dangerously high potassium levels.
• Phenytoin: Cotri can raise phenytoin blood levels and increase side effects.
• Sulfonylureas: Combined use can cause low blood sugar in diabetic patients.
• Spironolactone: Combined use in older adults raises the risk of high potassium and hospitalization.

Risks and warnings

• Allergy Risk: Avoid this medicine if you have a known sulfa drug allergy.
• Kidney Disease: Use with caution and dose adjustment in patients with reduced kidney function.
• Pregnancy: Avoid during the first trimester and near term due to risk to the baby.
• Breastfeeding: Avoid in mothers nursing infants under two months old.
• Blood Disorders: Use caution in patients with G6PD deficiency or folate deficiency.
• Liver Disease: Avoid in patients with significant liver impairment.
• Elderly Patients: Higher risk of severe skin reactions and blood count drops in older adults.

Cotri Tablet 80mg/400mg Side Effects

• Nausea and vomiting
• Loss of appetite
• Diarrhea
• Skin rash or itching
• Increased sensitivity to sunlight
• Headache
• Metallic taste in the mouth
• Severe skin reactions such as Stevens Johnson syndrome
• Yellowing of skin or eyes from liver injury
• Unusual bruising or bleeding from low blood counts
• Signs of severe allergic reaction such as facial swelling or breathing trouble
• High potassium levels causing irregular heartbeat

Storage Conditions

• Store below 25 degrees Celsius in a cool dry place.
• Keep the strip in its original packaging away from moisture.
• Protect from direct sunlight and heat.
• Keep out of reach of children.
• Discard any tablets past their printed expiry date.