Darzalex Side Effects
What should I watch for?
This drug may make you feel generally unwell. Report any side effects. Continue your course of treatment even though you feel ill unless your doctor tells you to stop.
This medicine can cause serious allergic reactions. To reduce your risk you may need to take medicine before treatment with this medicine. Take your medicine as directed.
This medicine can affect the results of blood tests to match your blood type. These changes can last for up to 6 months after the final dose. Your healthcare provider will do blood tests to match your blood type before you start treatment. Tell all of your healthcare providers that you are being treated with this medicine before receiving a blood transfusion.
This medicine can affect the results of some tests used to determine treatment response; extra tests may be needed to evaluate response.
Do not become pregnant while taking this medicine or for 3 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.
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
- breathing problems
- feeling faint or lightheaded
- 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.
- nausea, vomiting
- shortness of breath
- signs of decreased platelets or bleeding - bruising, pinpoint red spots on the skin, black, tarry stools, blood in the urine
- signs of decreased red blood cells - unusually weak or tired, feeling faint or lightheaded, falls
- signs of infection - fever or chills, cough, sore throat, pain or difficulty passing urine
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
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.