Sertaconazole (Ertaczo, Dermofix, Konzert, Zalain) is an antifungal medication of the imidazole class. It is available as a cream to treat skin infections such as athlete's foot. Sertaconazole (Ertaczo, Dermofix, Konzert, Zalain) is an antifungal medication of the imidazole class. It is available as a cream to treat skin infections such as athlete's foot. It is also available in a vaginal tablet form. The most popular of these is Gyno-Dermofix. Sertaconazole has several known mechanisms of action. It is considered fungistatic, fungicidal, antibacterial, antiinflammatory, antitrichomonal, and antipruritic.