Itraconazole capsules 200 mg is a prescription antifungal medicine used to treat a wide range of fungal infections in the skin, nails, mouth, lungs, and internal organs. Itraconazole works by inhibiting the synthesis of ergosterol, an essential component of fungal cell membranes, thereby stopping fungal growth. It is commonly prescribed for conditions such as dermatophytosis, candidiasis, and aspergillosis. The 200 mg capsule is usually taken as directed by a healthcare professional, depending on the severity and type of infection. Common side effects may include nausea, abdominal discomfort, headache, and dizziness. It should be used with caution in patients with liver disease, heart failure, or those taking interacting medications. Always use it only under medical supervision.