Drug Potency and Efficacy
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Questions and Answers

What does potency measure?

  • The concentration of a drug producing 50% of the maximum effect
  • The amount of drug needed to produce an expected effect (correct)
  • The maximal response produced by a drug
  • The ability of a drug receptor complex to produce an expected effect

    • What is efficacy in the context of drugs?

  • The amount of drug needed to produce an expected effect
  • The maximal response produced by a drug
  • The concentration of a drug producing 50% of the maximum effect
  • The ability of a drug receptor complex to produce an expected effect (correct)

    • How is potency related to EC50?

  • Higher EC50 indicates higher potency
  • EC50 has no relation to potency
  • Lower EC50 indicates higher potency (correct)
  • EC50 measures efficacy, not potency

    • Study Notes

    Drug Pharmacology

    • Potency measures the amount of drug required to produce a specific effect, typically measured by the dose required to produce a certain response.
    • Efficacy is the maximum response or effect that can be produced by a drug, regardless of the dose.
    • Potency is related to EC50, which is the concentration of a drug that produces 50% of its maximum response or effect, with lower EC50 values indicating higher potency.

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    Test your knowledge on drug potency and efficacy in pharmacology. Learn about the measures of potency and efficacy and how they contribute to the effectiveness of drugs.

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