<prompt> Phase 3 clinical trial is also called asHuman pharmacologyPost marketing surveillanceTherapeutic explorationTherapeutic confirmation  <response>: Phase 3 trial-done on 1000s of patients in various centers- multicentric, double-blinded after completion of phase 3, new drug will be released into the market Reference: Katzungs Pharmacology; 13th edition; Chapter 5; Development Regulation of Drugs 