Itranox is an antifungal medication that contains the active ingredient itraconazole. It is primarily used to treat a number of conditions resulting from fungal infections that affect the body, including skin infections caused by various types of fungi, such as athlete's foot, tinea cruris, and tinea corporis. It also treats fungal nail infections, whether in the fingers or toes, which may cause discoloration or breakage of the nails. It also treats some types of mucous membrane infections, such as those that may affect the mouth or vagina. It can also be used in cases of more serious systemic fungal infections that affect internal organs such as the lungs or other organs.