Active substance

Bacitracin Zinc, Polymyxin B Sulfate

3 products from 3 companies contain this in United States.

3 without prescriptionOintmentPowder

Available without a prescription

Antibiotic500 [iU]/g + 10000 [iU]/gWithout prescriptionOintment CVS PHARMACY, INC · Bacitracin Zinc, Polymyxin B Sulfate Doubleantibioticointment10000 [USP'U]/g + 500 [USP'U]/gWithout prescriptionOintment Trifecta Pharmaceuticals USA LLC · Bacitracin Zinc, Polymyxin B Sulfate Polvo De Sulfa First Aid Antibiotic500 [USP'U]/g + 10000 [USP'U]/gWithout prescriptionPowder GRANDALL DISTRIBUTING, LLC · Bacitracin Zinc, Polymyxin B Sulfate

Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.