Clinical Trials is a registry of publicly and privately supported clinical studies conducted around the world. The site provides information about a trial’s status, its purpose, who may participate, and where the trials are taking place.

Use the search box found on the home page, and at the top of every page of the site, to search for clinical studies.

NIH Clinical Research Trials and You

NIH Clinical Research Trials and You provides general information on participating in clinical research, with a focus on NIH-funded research.

MedlinePlus® Clinical Trials Information

MedlinePlus is a Web-based health information service of the National Library of Medicine. It explains health topics using language that is easy to understand. Visit Clinical Trials (also available in Spanish) to learn more about clinical research and find answers to common questions.

FDA Clinical Trials and Drug Development

The FDA (US Food and Drug Administration) is responsible for ensuring the safety and effectiveness of drugs, vaccines, and other medical products. Learn more about clinical trials and the drug development process on the FDA’s Web site.