Dual antibiotic combines the power of bacitracin with polymyxin B sulfate.. 1 gram contains bacitracin 500 units; polymyxin b 10,000 units.. Does not contain neomycin so it's safe for those who will experience negative side effects if they use Neosporin®. 0.9 gram per packet. 144 packets make this box a good choice for a workplace first-aid kit or your travel toiletries bag "just in case.".