What is Enzalutamide 40mg Capsules ? Indian Enzalutamide 40mg Capsules Cost is a medicine used to treat prostate cancer. It belongs to a class of drugs called anti-androgens, which work by blocking the action of the male hormone testosterone in the body. Enzalutamide 40mg Capsules is used in men whose cancer has spread to other parts of the body and who have already received treatment with other hormone therapies.