Explore by areas of focus


We’ve devoted more than 60 years of research to cardiovascular diseases. Much of our research has focused on identifying new medicines for hypertension (high blood pressure) and many other cardiovascular (heart and blood vessel) conditions.


View cardiovascular trials


Our areas of focus in hormone conditions (endocrinology) span from more common conditions like diabetes to NASH (nonalcoholic steatohepatitis).

View diabetes and endocrinology trials


From developing vaccines for Ebola to pioneering research in HIV, MSD has a long history in combating global health threats caused by infectious diseases.

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Neurological (brain and nerve conditions) are some of the most challenging to research. It’s our goal to research, test, and develop more effective and targeted treatments for conditions like Alzheimer’s, depression, and schizophrenia.

View neurosciences trials


Our clinical trials are helping doctors find out if investigational medicines alone, or in combination with other treatments, may help improve the lives of people with cancer.

View oncology trials


The respiratory (breathing) system is complex and involves many different parts. Our research focuses on finding ways to help fight problems that affect breathing and the immune system.

View respiratory and immunology trials


MSD knows the power of prevention and the public health value of vaccines. We are working on vaccines to help protect more people from serious illness.

View vaccines trials

Our long-standing history in medical science

We’ve spent the past 130 years focused on research and innovation to help save and improve lives. With global reach and science-driven research, we’re maintaining our dedication to continue in the pursuit of better health.

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Diversity in our clinical trial research

Different people may have different reactions to the same treatment, based on their age, gender, weight, race, ethnicity, and other factors. Clinical trials rely on volunteers to take part, and it’s vital that these volunteers come from diverse backgrounds. By including people from diverse backgrounds, clinical trials can show if the treatments are safe and work well for people from all different communities.

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Female doctor listening to an older man's heart while a younger woman watches.

Resources for patients and caregivers

Whether you’re a patient or a caregiver, use these resources to learn if you or your loved one may be eligible to take part in a clinical trial.