Chemotrim: What You Need to Know About This Antibiotic Suspension

What it is

Chemotrim is a brand of sulfamethoxazole + trimethoprim, a combination antibiotic. It belongs to a class of drugs called sulfonamides, which work by stopping the growth of bacteria.

What it's used for

Chemotrim is used to treat bacterial infections such as urinary tract infections, shigellosis (a type of diarrheal infection), and acute otitis media (middle ear infection) in children. It is also used for other infections proven or strongly suspected to be caused by susceptible bacteria. It is not effective against viral infections. Your doctor will determine if it is the right medicine for your condition.

How it's taken

Chemotrim suspension is taken by mouth. The dose and duration of treatment depend on the type of infection, your age, and your weight. A healthcare professional will give you the correct dosing instructions. It is important to take the full course exactly as prescribed, even if you start feeling better, to prevent the infection from returning and to reduce the risk of antibiotic resistance.

Common side effects

The most common side effects are stomach upset, nausea, vomiting, loss of appetite, and skin rashes. Although rare, serious reactions like severe skin reactions (e.g., Stevens-Johnson syndrome), liver damage, and blood problems (such as low white blood cells or anemia) have been reported. See a doctor if you experience unusual bruising, yellowing of the skin, or a severe rash.

Important cautions

Chemotrim should not be used in children under 2 months of age. It is also contraindicated if you have a known allergy to sulfonamides or trimethoprim, or if you have a history of drug-induced immune thrombocytopenia or megaloblastic anemia due to folate deficiency. Pregnant women should use it with caution because it may harm the unborn baby. Tell your doctor about any other medicines you are taking to avoid interactions.

Frequently asked questions