A clinical trial is done to find out if a medicine or treatment is safe and works well for treating a certain condition or disease.
A medicine or treatment must go through three phases before it is approved for use by the U.S. Food and Drug Administration (FDA). A fourth phase happens after the medicine or treatment has been approved.
New combinations of approved medicines can be studied in phase II, phase III, or phase IV trials.
|Primary Medical Reviewer||Adam Husney, MD - Family Medicine|
|Primary Medical Reviewer||Kathleen Romito, MD - Family Medicine|
|Specialist Medical Reviewer||Catherine D. Serio, PhD - Behavioral Health|
|Last Revised||May 14, 2012|
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