Department of Health and Human Services

Patient Network

Bringing Your Voice to Drug and Device Approval and Safety

Clinical Trials

The FDA does not conduct Clinical Trials. Clinical trials are voluntary research studies conducted in people and designed to answer specific questions about the safety or effectiveness of drugs, vaccines, other therapies, or new ways of using existing treatments. Learn more about clinical trials and find a trial that might be right for you

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Learn More About Clinical Trials

  • Clinical Research Versus Medical Treatment
    Understand the differences between clinical research and medical treatment and what those differences mean for you. Find answers to your questions about clinical trials, such as why they are done, who should consider participating, and issues to consider before joining a trial.
  • What are the Different Types of Clinical Research
    Understand the different types of research and the four clinical trial phases, such as their purpose and how many people participate in each of the phases.
  • Informed Consent for Clinical Trials
    Understand what informed consent is and the questions you need to know before signing informed consent.
  • Diversity in Clinical Trial Participation
    It is important to test drugs and medical products in the people they are meant to help. Learn how FDA works to make sure that people of different ages, races, ethnic groups, and genders are included in clinical trials.
  • Additional Resources
    Find more resources to help you understand clinical trials and how they may help you.