Welcome to the KEYTRUDA® (pembrolizumab) patient site
This site is an online portal for UK patients who have been prescribed pembrolizumab only. It contains information about the pembrolizumab treatments and additional resources.
Reporting of side effects: If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly via the Yellow Card Scheme at https://yellowcard.mhra.gov.uk/. By reporting side effects, you can help provide more information on the safety of this medicine.
Merck Sharp & Dohme (UK) Limited Registered Office: 120 Moorgate, London, EC2M 6UR. A company registered in England and Wales. Company Registration Number: 233687. Copyright © 2025 Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.
GB-PDO-03336 | Date of Preparation: July 2025