0 interactions for Polymyxin B Sulfate And Trimethoprim - Polymyxin B Sulfate And Trimethoprim Sulfate solution/ Drops®A therapy excluded from this list of known interactions does not necessarily mean that no interactions exist between that therapy and and Polymyxin B Sulfate And Trimethoprim - Polymyxin B Sulfate And Trimethoprim Sulfate solution/ Drops®.