Griseofulvin is an antifungal medication primarily used to treat infections caused by certain types of fungi, particularly those affecting the skin, hair, and nails. It works by inhibiting fungal cell division, which helps to eliminate the infection over time. This medication is often prescribed for conditions like ringworm and tinea capitis, and it is usually taken orally. Treatment duration can vary depending on the severity of the infection, and it is important to follow a healthcare provider's instructions for effective results.