Get emergency medical help if you have signs of an allergic reaction to Kisqali: (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).
Seek medical treatment if you have a serious drug reaction that can affect many parts of your body. Symptoms may include: skin rash, fever, swollen glands, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes.
Call your doctor at once if you have:
fast or pounding heartbeats, fluttering in your chest, shortness of breath, and sudden dizziness (like you might pass out);
low white blood cell counts - fever, mouth sores, skin sores, sore throat, cough, trouble breathing;
signs of inflammation in the lungs - new or worsening cough, painful or difficult breathing, wheezing, feeling short of breath even while resting; or
liver problems - loss of appetite, upper stomach pain, tiredness, easy bruising or bleeding, dark urine, jaundice (yellowing of the skin or eyes).
Your cancer treatments may be delayed or permanently discontinued if you have certain side effects.
Common Kisqali side effects may include:
low white blood cells, infections;
cough;
nausea, vomiting;
diarrhea, constipation;
feeling tired;
rash;
headache; or
hair loss.
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.
 Kisqali side effects (more detail)
