Generality
Co-trimoxazole is nothing more than the combination of sulfamethoxazole (a sulfonamide) and trimethoprim (another antibacterial) in a fixed ratio of 5: 1.
Most likely, this combination of active ingredients is better known under the trade name of Bactrim®.
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Sulfamethoxazole - Chemical Structure
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Trimethoprim - Chemical Structure
Unlike the single active ingredients that possess bacteriostatic activity (ie they are able to inhibit bacterial growth), their association allows to obtain a "bactericidal action (ie, when used together, they are able to kill bacterial cells). .
Co-trimoxazole is available in pharmaceutical formulations suitable for both oral and parenteral administration.
