Learn about KEYTRUDA® (pembrolizumab), an immunotherapy that works with your immune system to help fight certain cancers. Visit the patient website.

Learn how KEYTRUDA® (pembrolizumab) works with your immune system to help fight cancer cells. Watch two videos about immunotherapy and how it works in the body.

See how long treatment takes and other information on what to expect when taking KEYTRUDA® (pembrolizumab).

Learn about the side effects that may occur while taking KEYTRUDA® (pembrolizumab). Review serious side effects and common side effects with KEYTRUDA.

Learn about an immunotherapy treatment option to help certain patients with non–small cell lung cancer. See clinical results here.

Find answers to frequently asked questions about KEYTRUDA® (pembrolizumab) including how does KEYTRUDA work, PD-L1 testing information, and more.

Learn about treatment options that may help certain patients with advanced urothelial bladder cancer. Download our brochure for one treatment option containing tips that may help manage side effects and more.

View tips and resources that may help while receiving KEYTRUDA® (pembrolizumab) including what to expect with your first infusion appointment and what to know about your treatment schedule.

Learn about cost information, insurance, and potential financial assistance options with KEYTRUDA® (pembrolizumab). See more at keytruda.com.

Learn about an immunotherapy treatment option that may help certain people facing head and neck squamous cell cancer at keytruda.com.