Your condition will be monitored carefully while you are receiving this medication.
You may need blood work while taking this medication.
This medication can cause serious infusion reactions. To reduce the risk your care team may give you other medications to take before receiving this one. Be sure to follow the directions from your care team.
This medication may increase your risk of getting an infection. Call your care team for advice if you get a fever, chills, sore throat, or other symptoms of a cold or flu. Do not treat yourself. Try to avoid being around people who are sick.
Call your care team if you are around anyone with measles, chickenpox, or if you develop sores or blisters that do not heal properly.
Avoid taking medications that contain aspirin, acetaminophen, ibuprofen, naproxen, or ketoprofen unless instructed by your care team. These medications may hide a fever.
This medication may cause serious skin reactions. They can happen weeks to months after starting the medication. Contact your care team right away if you notice fevers or flu-like symptoms with a rash. The rash may be red or purple and then turn into blisters or peeling of the skin. You may also notice a red rash with swelling of the face, lips, or lymph nodes in your neck or under your arms.
In some patients, this medication may cause a serious brain infection that may cause death. If you have any problems seeing, thinking, speaking, walking, or standing, tell your care team right away. If you cannot reach your care team, urgently seek another source of medical care.
Talk to your care team if you may be pregnant. Serious birth defects can occur if you take this medication during pregnancy and for 12 months after the last dose. You will need a negative pregnancy test before starting this medication. Contraception is recommended while taking this medication and for 12 months after the last dose. Your care team can help you find the option that works for you.
Do not breastfeed while taking this medication and for at least 6 months after the last dose.
Side effects that you should report to your care team as soon as possible:
-Allergic reactions or angioedema—skin rash, itching or hives, swelling of the face, eyes, lips, tongue, arms, or legs, trouble swallowing or breathing
-Bowel blockage—stomach cramping, unable to have a bowel movement or pass gas, loss of appetite, vomiting
-Dizziness, loss of balance or coordination, confusion or trouble speaking
-Heart attack—pain or tightness in the chest, shoulders, arms, or jaw, nausea, shortness of breath, cold or clammy skin, feeling faint or lightheaded
-Heart rhythm changes—fast or irregular heartbeat, dizziness, feeling faint or lightheaded, chest pain, trouble breathing
-Infection—fever, chills, cough, sore throat, wounds that don't heal, pain or trouble when passing urine, general feeling of discomfort or being unwell
-Infusion reactions—chest pain, shortness of breath or trouble breathing, feeling faint or lightheaded
-Kidney injury—decrease in the amount of urine, swelling of the ankles, hands, or feet
-Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue
-Redness, blistering, peeling, or loosening of the skin, including inside the mouth
-Stomach pain that is severe, does not go away, or gets worse
-Tumor lysis syndrome (TLS)—nausea, vomiting, diarrhea, decrease in the amount of urine, dark urine, unusual weakness or fatigue, confusion, muscle pain or cramps, fast or irregular heartbeat, joint pain
Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
-Headache
-Joint pain
-Nausea
-Runny or stuffy nose
-Unusual weakness or fatigue
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.