Get emergency medical help if you have signs of an allergic reaction to Jakafi: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Some side effects may be similar to the symptoms of myelofibrosis. Call your doctor at once if you have:
blisters or painful skin rash;
changes in the size, shape, or color of a mole or skin lesion;
problems with speech, thought, vision, or muscle movement (these symptoms may start gradually and get worse quickly);
nausea, vomiting, weakness, general ill feeling;
pain or burning when you urinate;
low blood cell counts - fever, chills, tiredness, mouth sores, skin sores, easy bruising, unusual bleeding, pale skin, cold hands and feet, feeling light-headed or short of breath; or
signs of tuberculosis: fever, cough, night sweats, loss of appetite, weight loss, and feeling very tired.
Common Jakafi side effects include:
low blood cell counts;
fluid retention;
diarrhea;
dizziness; or
headache.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Jakafi side effects (more detail)
