There are many different over-the-counter antibiotic ointments available for purchase from pretty much any pharmacy or store out there. But which one is the best? Is there a best? What is the difference among them? In each gram of bacitracin ointment , there is 500 units only. Nothing else. For Neosporin , each gram contains the following: - neomycin 3.5mg - polymyxin B 5000 units - bacitracin 400 units For Triple Antibiotic , each gram contains: - neomycin 3.5mg - polymyxin B 5000 units - baci…