Sulphacetamide + Neomycin + Bacitracin is a combination of three antibiotics: Sulphacetamide , Neomycin and Bacitracin. Sulphacetamide stops bacteria from producing folic acid, a nutrient required for bacterial multiplication. Neomycin stops bacterial growth by preventing the synthesis of essential proteins required by the bacteria to carry out vital functions. Bacitracin works by preventing the formation of the bacterial protective covering, thereby killing the bacteria. Together, they treat your infection effectively.