This site is for patients using OPDIVO or OPDIVO and ipilimumab.

Your guide to OPDIVO and side effects that can occur with treatment

Reporting side effects

What to do if you suspect a side effect:

  • - Call your doctor immediately if you experience signs or symptoms or if they get worse. Signs and symptoms that may appear mild can quickly worsen if left untreated.
  • - DO NOT treat any signs and symptoms yourself.
  • - DO NOT feel embarrassed or worry that you are bothering your doctor.

Please note: Contact your doctor if you need advice, information, and support.

You can report any suspected side effects associated with the use of health products to Health Canada by:

NOTE: Contact your health professional if you need information about how to manage your side effects. The Canada Vigilance Program does not provide medical advice.