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Gleevec Oral

Generic Name: IMATINIB - ORAL
Pronounced: (ih-MAT-in-ibb)

Gleevec Oral Side Effects

Upset stomach, nausea, vomiting, diarrhea, headache, joint pain, or muscle cramps/pain may occur. If any of these effects persist or worsen, notify your doctor.

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.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

  • easy bruising/bleeding
  • fast/pounding heartbeat
  • extreme tiredness
  • sudden/unexplained weight gain
  • swelling (especially of lower legs/the area around eyes)
  • increasing trouble breathing (shortness of breath)


Tell your doctor immediately if any of these rare but very serious side effects occur:

  • black/bloody stools
  • dark urine
  • stomach/abdominal pain
  • vomit that looks like coffee grounds
  • yellowing eyes/skin


This medication can lower the body's ability to fight an infection. Notify your doctor promptly if you develop any signs of an infection such as fever, chills, or persistent sore throat.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction:

  • rash
  • itching/swelling (especially of the face/tongue/throat)
  • dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice any 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.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Gleevec Oral Precautions

Before taking imatinib, 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:

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