Mechanism of action
Elemental iodine has a very broad antimicrobial spectrum: bacteria, viruses, bacterial endospores, fungi and protozoas are destroyed through oxidative interaction and direct iodination of biological macromolecules. It is a labile complex of iodine with the polyvinyl pyrrolidone polymer, from which iodine is continually delivered. Only this free iodine has antimicrobial activity.