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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Phase 3 clinical trial is also called as
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The correct answer is  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: Katzung's Pharmacology; 13th edition; Chapter 5; Development & Regulation of Drugs