Hello, My Dad Has Been Fighting Prostate Cancer For 14

Hello, My Dad has been fighting prostate cancer for 14 years. The prostate gland was removed 14 years ago. Now the cancer spread to his Lymph Nodes is his leg. The doctor has prescribed him with Enzalutamide. He has been taking lipitor. Can these drugs interact or does he have to stop taking the Lipitor. Thank you for your time. Shayne