Drug Toxicity: Effective & Lethal Dose-Responses


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Which of the following drugs is the most potent?

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1. __~__is the relative dose that's necessary to produce a drug effect of a defined magnitude.

2. The therapeutic index (TI) is equal to which one of the following?

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About This Quiz & Worksheet

This quiz/worksheet is comprised of questions on facts related to drug classification and power, allowing you a quick means of measuring how far your knowledge on the subject has come.

Quiz & Worksheet Goals

This quiz/worksheet includes questions touching on:

  • Drug effect
  • Defined magnitude dosage
  • The therapeutic index
  • Margin of safety
  • TI

Skills Practiced

  • Distinguishing differences - ensure that you can distinguish drugs based on potency and safety
  • Making connections - use your understanding of TI to connect its presence with the correlating drug attribute
  • Information recall - access the knowledge you've gained regarding the therapeutic index

Additional Learning

To learn more about drug dosage, review the accompanying lesson titled Drug Toxicity: Effective & Lethal Dose-Responses. This lesson contains the following objectives:

  • Define drug toxicity
  • Understand the significance of LD50
  • Learn about ED50 and drug efficacy