Tioconazole is an antifungal medication of the imidazole class used to treat infections caused by a fungus or yeast. It is marketed under the brand names Trosyd and Gyno-Trosyd (Pfizer). Tioconazole ointments serve to treat women's vaginal yeast infections. They are available in one day doses, as opposed to the 7-day treatments more common in use in the past.
Side effects (for the women's formulas) may include temporary burning/irritation of the vaginal area, moderate drowsiness, headache similar to a sinus headache, hives, and upper respiratory infection. These side effects may be only temporary, and do not normally interfere with the patient's comfort enough to outweigh the end result.
^Godefroi, E. F.; Heeres, J.; Van Cutsem, J.; Janssen, P. A. J. (1969). "Preparation and antimycotic properties of derivatives of 1-phenethylimidazole". Journal of Medicinal Chemistry12 (5): 784. doi:10.1021/jm00305a014.edit