Bicalutamide is a non-steroidal antiandrogen medication primarily used in the treatment of prostate cancer. It works by blocking the action of androgens (male hormones such as testosterone), which can stimulate the growth of prostate cancer cells. By preventing these hormones from binding to androgen receptors, bicalutamide helps slow or stop the progression of hormone-dependent tumors. The drug is commonly prescribed in combination with other hormone therapies, such as luteinizing hormone-releasing hormone (LHRH) analogues, or used alone in certain clinical situations. Bicalutamide is taken orally and is generally well tolerated, though it can cause side effects related to hormonal changes.