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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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Therapeutic index is a measure of a drug's:
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The correct answer is  Therapeutic index is a way to measure the drug's safety. It is a comparison of the amount of a therapeutic agent that causes the therapeutic effect to the amount that causes death. Quantitatively, it is described as the ratio given by the lethal or toxic dose divided by the therapeutic dose. Ref: KDT, 6th Edition, Pages 54, 55; Lippincott's Illustrated Reviews: Pharmacology, 3rd Edition, Page 33; Essentials of Medical Pharmacology By K D Tripathi, 5th Edition, Page 48