Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have:
symptoms of sepsis--confusion, severe drowsiness, rapid breathing, feeling very ill;
signs of pneumonia--cough with yellow or green mucus, stabbing chest pain, wheezing, trouble breathing;
low blood cell counts--fever, mouth sores, skin sores, easy bruising, unusual bleeding, pale skin, cold hands and feet, feeling light-headed; or
signs of tumor cell breakdown--chills, joint or muscle pain, feeling tired or short of breath, fast or slow heartbeats, nausea, vomiting, dark or cloudy urine, or seizure (convulsions).
Your cancer treatments may be delayed or permanently discontinued if you have certain side effects.
Common side effects may include:
stomach pain, nausea, vomiting, diarrhea, constipation;
feeling tired or short of breath;
low blood pressure, feeling dizzy or lightheaded;
muscle and joint pain;
swelling in your arms, legs, hands, and feet;
fever, low blood cell counts;
pneumonia, sepsis;
mouth pain;
rash; or
cold symptoms such as stuffy nose, sneezing, sore throat, cough.
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.
 Venetoclax side effects (more detail)
