According to the American National Poll on Clinical Research, patients are more likely to join clinical trials if their health care professional refers them. Many patients look to their doctor and other health care professionals as trusted sources of clinical trial information.

Merck is committed to advancing research, and we need your partnership to do it. We recognize the importance of the doctor-patient relationship in bridging the gap between patient interest and patient education when considering clinical trial options.

Find clinical trials for your patients

Merck is enrolling for clinical trials across various health conditions. For cancer trials, visit the Merck Oncology website. For all other trials, click below.

View all trials that are enrolling participants

Contact our clinical trial information center

To see if your patients may qualify for a trial, contact our clinical trial information center at


Ongoing and completed research

Go to to find:

  • Trials currently in progress but no longer recruiting
  • Completed trials
  • Trial results (when available)
Merck is researching 7 key areas of focus:
  • Cardiovascular diseases
  • Diabetes and endocrinology
  • Infectious diseases
  • Neurosciences
  • Oncology
  • Respiratory and immunology
  • Vaccines

Our research pipeline gives a brief overview and reflects quarterly information.

Access our at-a-glance pipeline

Our policies and perspectives

Merck is committed to conducting ethical research and disclosing balanced, complete, and accurate information about our registered clinical trials, regardless of outcome. Read our policies and perspectives on clinical trial ethics and publication of clinical trial data.

View our clinical trial policies and perspectives

Join the clinical research Investigator Databank

If you are interested in becoming a research investigator or are currently conducting research, consider joining the Investigator Databank. The databank is a global collaboration between Merck, Janssen, Lilly, Pfizer, Novartis and other research organizations where investigators can share information, lower administrative burdens, and become more visible to research sponsors.

Start an account or sign in


Resources for your patients

Some of the pages below might be helpful when talking to your patients about joining a clinical trial.

Patient resources

For help understanding clinical trial listings and for other resources, visit our Clinical Trial Patient Resources section.
Visit the Patient Resources page

Frequently asked questions (FAQs)

Understanding clinical trials is important when making the decision to join one. Our FAQ section may provide answers to your patients’ commonly asked questions.
Visit the FAQ page

What to consider when joining a clinical trial

Joining a clinical trial is an important decision. We’re here to help and to offer information and guidance.
Visit the What to Consider page