This video is a general overview of clinical research.
For more information on clinical studies please visit these sites:
Phase I-IV Trial Participation
ClinSite specializes in Phase II-IV clinical research trials
Involves a small group (25-75) of healthy volunteers and looks at how an investigational new drug affects the healthy volunteers. The main purpose of this Phase is to evaluate and collect drug safety data
Involves larger groups (100-500) of volunteers and the main purpose is to evaluate the effectiveness of the investigational drug in treating a particular condition.
Involves much larger groups (1000-5000) of volunteers. In this phase data is collected on efficacy and safety while comparing to treatments already available.
Involves very large groups of volunteers. In this phase the drug may be FDA approved and further data is collected on efficacy and long-term safety usage is evaluated. This phase may also invovle comparisons to other commonly used treatments.