FDA Approves Itrafungol, a New Animal Drug for Treating Ringworm in Cats The U.S. Food and Drug Administration today announced the approval of Itrafungol (itraconazole oral solution), a new animal drug for treating dermatophytosis caused by Microsporum canis in cats. Commonly called ringworm, dermatophytosis is a fungal infection of the skin. Itrafungol works by selectively binding to certain fungal proteins, causing irreversible structural degeneration of the fungi. |