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therapeutic indexes

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therapeutic index

 
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–noun Pharmacology.
the ratio between the dosage of a drug that causes a lethal effect and the dosage that causes a therapeutic effect.
Also called margin of safety.

Origin:
1925–30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: therapeutic index
Function: noun
: a measure of the relative desirability of a drug for the attaining of a particular medical end that is usually expressed asthe ratio of the largest dose producing no toxic symptoms to the smallest dose routinely producing cures
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

therapeutic index n.
The ratio between the toxic dose and the therapeutic dose of a drug, used as a measure of the relative safety of the drug for a particular treatment.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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