Flutamide is a medication primarily used to treat prostate cancer. It works by blocking the action of androgens, which are male hormones that can promote the growth of cancer cells in the prostate. By inhibiting these hormones, flutamide helps to slow down or stop the progression of the disease. This drug is often prescribed in combination with other treatments, such as surgery or radiation therapy. Flutamide is taken orally and may cause side effects, including hot flashes, gastrointestinal issues, and liver function changes. Regular monitoring by a healthcare provider is essential during treatment.