Polymixin B sulfate/trimethoprim sulfate. Lexi-Comp ONLINE, 2016 Wolters Kluwer, Inc. Accessed June 9, 2016 from http://online.lexi.com
POLYTRIM (polymixin B sulfate and trimethoprim ophthalmic solution). Accessed June 9, 2016 from: http://www.allergan.com/assets/pdf/polytrim_pi