Choosing to participate in a clinical trial is an important personal decision. Answers to the following frequently asked questions about clinical trials are provided by ClinicalTrials.gov, a service of the U.S. National Institutes of Health. They provide detailed information about clinical trials.

Click on a question below to read their answer or access this section of the ClinicalTrials.gov website directly online at:

Clinicaltrials.gov - Understanding Clinical Trials