Clinical Trials
From DrugPedia: A Wikipedia for Drug discovery
Revision as of 04:57, 31 July 2008 by 172.141.121.99 (Talk)
Clinical Trials involve the following Phases
Testing in Humans
Number of Patients Length Purpose Percent of Drugs Successfully Tested
Phase I 20 - 100 Several months Mainly safety 70 percent
Phase II Upto several hundred Several months to 2 years Some short-term safety, 33 percent
but mainly effectiveness
Phase III Several hundred to 1 - 4 years Safety, effectiveness, dosage 25 - 30 percent
several thousand
Phase IV Click here for revelant details
