See also Warning section.
Nausea, vomiting, headache, tiredness, constipation, and diarrhea may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
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.
This medication decreases bone marrow function, an effect that may lead to a low number of blood cells such as red cells, white cells, and platelets. This effect can cause anemia, decrease your body's ability to fight an infection, or cause easy bruising/bleeding. Tell your doctor right away if you develop any of the following serious symptoms: severe tiredness, pale skin, signs of infection (such as fever, chills, persistent sore throat), easy bruising/bleeding (such as bloody/black stool, bloody/pink urine).
Nilotinib sometimes causes side effects due to the rapid destruction of cancer cells (tumor lysis syndrome). To lower your risk, your doctor may add a medication and tell you to drink plenty of fluids. Tell your doctor right away if you have symptoms such as: low back/side pain (flank pain), signs of kidney problems (such as painful urination, change in the amount of urine), muscle spasms/weakness.
Tell your doctor right away if you have any serious side effects, including: severe stomach/abdominal pain, toe/joint pain, swelling hands/ankles/feet, unusual/rapid weight gain, symptoms of high blood sugar (such as increased thirst/urination), signs of liver disease (such as persistent nausea/vomiting, stomach/abdominal pain, yellowing eyes/skin, dark urine).
Get medical help right away if you have any very serious side effects, including: fast/pounding/irregular heartbeat, severe dizziness, fainting, seizures, signs of a heart attack (such as chest/jaw/left arm pain, shortness of breath, unusual sweating), signs of a stroke (such as weakness on one side of the body, trouble speaking, sudden vision changes, confusion), signs of bleeding in the brain (such as sudden severe headache, sudden vision changes, confusion, loss of consciousness), signs of blood circulation disease (such as numbness/pain in the legs, leg pain with physical activity, decrease in walking distance).
A very serious allergic reaction to this drug is rare. However, get medical help right away 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.