Phases of a Clinical Trial

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What are the different phases of a clinical trial?

Phase I:  What is the safe dose?  How does the treatment affect the human body?  How should the treatment be given?

Phase II:  Does the treatment treat the disease or cure the condition?

Phase III:  Is the treatment better than, the same as, or worse than the standard (or most widely accepted) treatment?  If there is no standard treatment available, is it better than, the same as, or worse than a placebo?

 

Copyright 2004 Creighton University School of Medicine

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