Abiraterone acetate, the active ingredient of ZYTIX is the acetyl ester of abiraterone. Abiraterone is an inhibitor of CYP17 (17α-hydroxylase/C17,20-lyase). Each ZYTIX tablet contains 250 mg of abiraterone acetate. Abiraterone acetate is a white to off-white, non-hygroscopic, crystalline powder.

Indication: FDA-approved for use in combination with prednisone for the treatment of patients with metastatic, castration-resistant prostate cancer who have received prior chemotherapy containing docetaxel.