The About Clinical Studies section of this site provides a brief overview of clinical research, information for potential clinical study participants, and a glossary of common words used on ClinicalTrials.gov.
Read a brief introduction to clinical research, including types of studies and what happens during a study. Find information on eligibility to participate in a study, risks and benefits of study participation, the informed consent process, and questions to ask when considering whether to participate in a study.
Find links from the National Institutes of Health and the Food and Drug Administration for information about clinical studies, drug development, and other health care issues.
Access a glossary providing definitions for many of the words used on ClinicalTrials.gov.