Cotri Suspension 40mg/200mg

About Cotri Suspension 40mg/200mg

Cotri Suspension 40mg/200mg Uses

• Treats urinary tract infections (UTIs)
• Treats middle ear infections (otitis media) in children
• Treats acute bronchitis flare ups in adults
• Treats traveler's diarrhea caused by susceptible bacteria
• Helps prevent and treat Pneumocystis jirovecii pneumonia (PCP)
• Treats shigellosis and other bacterial gut infections

Drug Class

• Sulfonamide antibiotic combination
• Contains trimethoprim and sulfamethoxazole
• Works by blocking two steps in bacterial folic acid production

What Experts Say

Doctors often prescribe co-trimoxazole because it fights many bacteria at once. Trimethoprim and sulfamethoxazole block two steps in the same bacterial process, so resistance builds more slowly than with single agent antibiotics. This is why pediatricians still choose this suspension for young children with ear or urinary infections.

Medical guidelines recommend co-trimoxazole for children older than two months, since younger infants face a higher jaundice risk from the sulfa part. Correct weight based dosing matters with this suspension. A pharmacist should calculate the dose from the child's current weight, and parents should finish the full course even if symptoms improve early.

Antibiotic resistance is a growing concern with sulfonamide drugs, so many experts ask for a urine or stool culture before treating stubborn infections. This suspension still works well for straightforward UTIs and traveler's diarrhea in healthy patients. Experts also check kidney function in older adults, since reduced clearance raises the risk of side effects.

Cotri Suspension 40mg/200mg formula

• Trimethoprim 40mg + Sulfamethoxazole 200mg/5ml

Available forms

• Suspension Bottle 50ml

How to use Cotri Suspension 40mg/200mg?

• Shake the suspension bottle well before every dose
• Use the marked oral syringe or measuring cup for accurate dosing
• Give the dose after a meal to reduce stomach upset
• Follow the exact dose and duration set by the doctor based on body weight
• Complete the full course even if symptoms improve within a few days
• Give doses at evenly spaced times, usually every 12 hours

Drug Interactions

• Methotrexate: Increases methotrexate levels and raises the risk of toxicity.
• Warfarin: Increases the blood thinning effect and raises bleeding risk.
• ACE Inhibitors: Raises the risk of high potassium levels when combined with these blood pressure drugs.
• Phenytoin: Increases phenytoin levels in the blood and can cause toxicity.
• Diuretics: Combining with certain diuretics in elderly patients raises the risk of low platelet counts.

Risks and warnings

• Allergy Risk: Avoid this suspension if the patient has a known allergy to sulfa drugs or trimethoprim.
• Infant Caution: Not recommended for infants younger than two months due to jaundice risk.
• Kidney Disease: Use with caution in patients with reduced kidney function, since dose adjustment may be needed.
• Blood Disorders: Avoid in patients with severe blood disorders like megaloblastic anemia from folate deficiency.
• Pregnancy Caution: Avoid during the first trimester and near term unless the doctor confirms it is necessary.
• G6PD Deficiency: Use carefully in patients with G6PD deficiency, since it can trigger red blood cell breakdown.

Cotri Suspension 40mg/200mg Side Effects

• Nausea or vomiting
• Loss of appetite
• Mild stomach upset or diarrhea
• Skin rash or itching
• Headache
• Severe allergic reaction with swelling or difficulty breathing
• Unusual bruising or bleeding
• Yellowing of the skin or eyes

Storage Conditions

• Store below 25°C in a cool, dry place away from direct sunlight
• Keep the bottle tightly closed when not in use
• Keep out of reach of children
• Do not freeze the suspension
• Discard any unused suspension after the expiry date printed on the pack