Keytruda Side Effects
What should I watch for?
Your condition will be monitored carefully while you are receiving this medicine.
You may need blood work done while you are taking this medicine.
Do not become pregnant while taking this medicine or for 4 months after stopping it. Women should inform their doctor if they wish to become pregnant or think they might be pregnant. There is a potential for serious side effects to an unborn child. Talk to your health care professional or pharmacist for more information. Do not breast-feed an infant while taking this medicine or for 4 months after the last dose.
Side Effects to watch for
Side effects that you should report to your doctor or health care professional as soon as possible:
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- bloody or black, tarry
- breathing problems
- changes in vision
- chest pain
- dizziness or feeling faint or lightheaded
- fast or irregular heartbeat
- hair loss
- joint pain
- low blood counts - this medicine may decrease the number of white blood cells, red blood cells and platelets. You may be at increased risk for infections and bleeding.
- muscle pain
- muscle weakness
- persistent headache
- redness, blistering, peeling or loosening of the skin, including inside the mouth
- signs and symptoms of high blood sugar such as dizziness; dry mouth; dry skin; fruity breath; nausea; stomach pain; increased hunger or thirst; increased urination
- signs and symptoms of kidney injury like trouble passing urine or change in the amount of urine
- signs and symptoms of liver injury like dark urine, light-colored stools, loss of appetite, nausea, right upper belly pain, yellowing of the eyes or skin
- swollen lymph nodes
- weight loss
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
- decreased appetite
- muscle pain
What may interact with this drug?
Interactions have not been studied.
Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.