
Resources for patients
For help understanding clinical trial listings and for other resources, visit our Patient Resources section.
Clinical Trials
Merck & Co, Inc, Rahway, NJ, USA, known as MSD outside of the United States and Canada, provides international versions of this site for both healthcare professionals and the general public.
Select a language below to be redirected to the MSD version of the site in your chosen language.
Latin America
Europe
Asia Pacific
Australia
Africa
If you’re not sure which area of focus you’re interested in, view all enrolling trials.

For help understanding clinical trial listings and for other resources, visit our Patient Resources section.

Learn what clinical trials are, how they work, and if you may be eligible to participate.