Definition: A physical or emotional change, occurring after a substance is taken or administered, that is not the result of any special property of the substance. The change may be beneficial, reflecting the expectations of the participant and, often, the expectations of the person giving the substance.
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Source:
ClinicalTrials.gov
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Source:
ClinicalTrials.gov
Examples: The placebo effect occurs both in patients taking the trial drug and the placebo.
