Amacin Eye & Ear Ointment - 4GActive Constituents Neomycin sulfate 5 mg g Polymixin B sulfate 5,000 IU g Prednisolone 2. 5 mg g Sulfacetamide sodium 50 mg g Actions Amacin combines antibacterial and anti inflammatory actions effective in the majority of commonly occurring eye and ear infections. Neomycin sulfate is an aminoglycoside antibiotic. It is bactericidal by way of irreversible inhibition of bacterial protein synthesis. Neomycin is broad spectrum and is most active against