Clinical Trials
From DrugPedia: A Wikipedia for Drug discovery
Revision as of 05:12, 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, but mainly effectiveness | 33 percent |
| Phase III | Several hundred to several thousand | 1 - 4 years | Safety, effectiveness, dosage | 25 - 30 percent |
| Phase IV |
