Azyl 0 mg capsules are used to treat prostate cancer. It may also be used to treat other conditions as determined by your doctor. It works by blocking the effects of male hormones such as testosterone. Azyl 0 mg capsules should be taken with food or alone, preferably at a specific time each day. Your doctor will decide what dose you need and how often you should take it. This will depend on the treatment you receive and may change from time to time. You should take it exactly as your doctor recommends.