Polymyxin B Sulfate

infections, and it may be combined with other drugs, such as trimethoprim or oxytetracycline. Specifically, polymyxin B sulfate is a polypeptide antibiotic that is considered to be too toxic to be ingested orally, but instead it is generally safe when used topically on the skin or eyes. Before using this drug, patients should discuss its proper use and the potential side effects with the prescribing physician.