Get emergency medical help if you have signs of an allergic reaction to Tibsovo: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Tibsovo can cause a condition called differentiation syndrome, which affects blood cells and can be fatal if not treated. This condition may occur within 1 days to 3 months after you start taking Tibsovo.
Seek medical help right away if you have symptoms of differentiation syndrome:
fever, cough, trouble breathing;
dizziness;
rash;
decreased urination;
rapid weight gain; or
swelling in your arms or legs.
Call your doctor at once if you have:
fast or pounding heartbeats, fluttering in your chest, shortness of breath;
sudden dizziness (like you might pass out);
low red blood cell counts (anemia) - pale skin, unusual tiredness, feeling light-headed, cold hands and feet;
high white blood cell counts - fever, weakness, not feeling well, bleeding or bruising, dizziness, sweating, pain or tingling, loss of appetite, weight loss, problems with vision or thinking, trouble breathing; or
nervous system problems - numbness, pain, tingling, weakness, burning or prickly feeling, vision or hearing problems, trouble breathing.
Common Tibsovo side effects include:
irregular heartbeats;
nausea, diarrhea, constipation;
fever, tiredness;
low red blood cell or high white blood cell counts;
cough, shortness of breath;
sores in your mouth or throat;
rash;
joint pain; or
swelling in your arms or legs.
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.
 Tibsovo side effects (more detail)
