Fluconazole 200 mg is an antifungal medication used to prevent and treat a variety of fungal and yeast infections. It belongs to a class of drugs called azole antifungals, and it works by stopping the growth of certain types of fungus. Fluconazole 200 mg tablets are used to treat serious fungal infections, including candidiasis, which is caused by a yeast called Candida. It may also be used to prevent candidiasis in patients having bone marrow transplants who receive cancer or radiation treatment. Fluconazole 200 mg tablets are available in blister strips in packs of 7 or 28 capsules.