SIDE EFFECTS: See also Warning section. Because nilutamide may be used with other medications, the side effects may be due to any one medicine or the combination of medications. Hot flashes, sweating, dizziness, loss of sexual interest/ability, vision changes (such as difficulty seeing when moving into the dark or light, changes in color vision), stomach pain, constipation, nausea, signs of alcohol intolerance (such as flushing, tiredness) dry skin, increased sensitivity to touch/pain, and loss of body hair may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Rarely, nilutamide has caused severe (sometimes fatal) liver problems. Seek immediate medical attention if you develop symptoms of liver problems (such as loss of appetite, persistent nausea/vomiting/stomach pain, severe tiredness, dark urine, yellowing eyes/skin). Liver problems can happen at any time while taking nilutamide, but they occur most often during the first 3-4 months of treatment. Your doctor will tell you whether to stop or continue nilutamide. Your doctor will monitor your liver function with blood tests before you start and while you are taking nilutamide. Keep all medical and laboratory appointments. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

PRECAUTIONS: Before taking nilutamide, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell your doctor or pharmacist your medical history, especially of: lung disease (such as asthma, chronic obstructive pulmonary disease-COPD, emphysema), liver problems. This drug may rarely make you dizzy or drowsy or cause vision changes. Alcohol or marijuana can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness or clear vision until you can do it safely. You may also develop intolerance to alcohol while taking this medication. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana. Nilutamide should not be used in women. Women who are pregnant should avoid touching or accidentally taking this medication. It may harm an unborn baby. Consult your doctor for more information. It is not known whether this drug passes into breast milk. Women who are breast-feeding should avoid touching or accidentally taking this medication. Consult your doctor for more information.

DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Some of the products that may interact with this drug include: testosterone (patch, gel, injection), anabolic steroids (including over-the-counter androgens/anabolics/testosterone precursors), DHEA, phenytoin, warfarin.

OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.