SIDE EFFECTS: See also Warning section. Nausea, vomiting, and loss of appetite commonly occur. Vomiting may last up to 12 hours. Your doctor may prescribe medication to prevent or relieve nausea and vomiting. Eating several small meals, not eating for 4 to 6 hours before treatment, or limiting activity may help lessen these effects. These symptoms usually decrease after 1 to 2 days. Diarrhea, flu-like symptoms (e.g., discomfort, uneasiness, body aches, headache), blurred vision, or flushing/numbness/tingling of the face may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Temporary hair loss may occur. Normal hair growth should return after treatment has ended. People using this medication may have serious side effects. However, your doctor has prescribed this drug because he or she has judged that the benefit to you is greater than the risk of side effects. Careful monitoring by your doctor may decrease your risk. If this medication leaks out of the vein into the tissue under the skin, it may cause serious tissue damage. Tell your doctor right away if you experience pain, burning, redness, or swelling at the injection site. Tell your doctor right away if you have any serious side effects, including: mouth sores, confusion, seizures. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any of the following symptoms of a serious allergic reaction: 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 using dacarbazine, 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: kidney disease, liver disease, blood disorders, decreased bone marrow function, current infections. Do not have immunizations/vaccinations without the consent of your doctor, and avoid contact with people who have recently received polio vaccine by mouth or flu vaccine inhaled through the nose. Since this medication can increase your risk of developing serious infections, wash your hands well to prevent the spread of infections. Avoid contact with people who have illnesses that may spread to others (e.g., flu, chickenpox). To lower the chance of getting cut, bruised, or injured, use caution with sharp objects like safety razors and nail cutters, and avoid activities such as contact sports. This drug may rarely cause blurred vision. Do not drive, use machinery, or do any activity that requires clear vision until you are sure you can perform such activities safely. This medication may make you more sensitive to the sun. Limit your time in the sun. Avoid tanning booths and sunlamps. Use sunscreen and wear protective clothing when outdoors. Tell your doctor right away if you get sunburned or have skin blisters/redness. During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor. It is not known if this drug passes into breast milk. Due to the possible risk to the infant, breast-feeding while using this drug is not recommended. Consult your doctor before breast-feeding. This medication can affect sperm production in men. Therefore, reliable forms of birth control should be used during treatment and for some time afterwards. Consult your doctor for more details.

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 products that may interact with this drug include: drugs that may decrease bone marrow function (e.g., azathioprine, trimethoprim/sulfamethoxazole).

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.