The term "duration of action" is best defined as

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Duration of action is the time during which drug concentration is sufficient to elicit a therapeutic response.The time it takes for a drug to elicit a therapeutic response is the drug's "onset of action." The time it takes a drug to reach its maximum therapeutic response is a drug's "peak effect." "The length of time it takes to remove a drug from circulation" defines a drug's elimination and does not correctly define a drug's duration of action.

The Term "Duration of Action" Is Best Defined as