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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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Description

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.