Polymyxin B, Bacitracin, and Neomycin

Neosporin; Triple Antibiotic Ointment

Neosporin (from Neo, (Greek) new + Sporos, (Greek) seed) is the product name of a antibiotic ointment produced by Pfizer used in the prevention of infection and speeding the healing of wounds. The original ointment contains three different antibiotics: bacitracin, neomycin, and polymyxin B. Other brand names for this mixture include Mycitracin® and Topisporin®. Neomycin and polymyxin are effective in killing gram-negative bacteria, while bacitracin targets gram-positive bacteria; hence, th ...