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therapeutic index

American  

noun

Pharmacology.
  1. the ratio between the dosage of a drug that causes a lethal effect and the dosage that causes a therapeutic effect.


Etymology

Origin of therapeutic index

First recorded in 1925–30

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The therapeutic index gives you the window in which the drug will be effective against the virus without causing undue side effects.

From Scientific American • Sep. 29, 2020

The difference between a concentration in which the drug inhibits the virus target and a concentration in which it hurts the human proteins is called the therapeutic index.

From Scientific American • Sep. 29, 2020

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