Iodex ointment contains 4.7% Iodine which is a commonly used topical antiseptic. An antiseptic has the ability to reduce the possibility of infection. Iodex aids in fighting and inhibiting the growth of bacteria, viruses, fungi and other microbes on the skin which can significantly improve the healing time of a cut, scrape, sore or splinter. When an infection is present in a wound, the area is often sore and painful. Applying Iodex to a wound combats the germs and relieves the pain and soreness surrounding it.