Cotrim Suspension 60 ml is an oral antibiotic formulation containing a combination of Sulfamethoxazole (200 mg) and Trimethoprim (40 mg) per 5 ml. This synergistic duo, known as co-trimoxazole, is effective against a broad spectrum of gram-positive and gram-negative bacteria, as well as certain protozoa. It works by inhibiting successive steps in bacterial folic acid synthesis, leading to a potent bactericidal effect.