A AK-Spore (Gramicidin/Neomycin/Polymyxin B Ophthalmic) by adhealth32 August 24, 2010 What is AK-Spore (Gramicidin/Neomycin/Polymyxin B Ophthalmic)? Gramicidin, neomycin, and polymyxin B are all antibiotics. They…