Enzalutamide is a medication primarily used in the treatment of prostate cancer. It belongs to a class of drugs known as androgen receptor inhibitors, which work by blocking the effects of male hormones (androgens) on prostate cancer cells, thereby slowing down the growth and spread of cancer. Enzalutamide is specifically indicated for metastatic castration-resistant prostate cancer (mCRPC), which is prostate cancer that has spread to other parts of the body and no longer responds to hormone therapy. It may also be used in combination with other medications or treatments for prostate cancer. Enzalutamide is typically taken orally in capsule form.