Potency (pharmacology)
Measure of drug activity / From Wikipedia, the free encyclopedia
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For other uses, see Potency (disambiguation).
In pharmacology, potency or biological potency[1] is a measure of a drug's biological activity expressed in terms of the dose required to produce a pharmacological effect of given intensity.[2] A highly potent drug (e.g., fentanyl, clonazepam, risperidone, benperidol, bumetanide) evokes a given response at low concentrations, while a drug of lower potency (e.g. morphine, alprazolam, ziprasidone, haloperidol, furosemide) evokes the same response only at higher concentrations. Higher potency does not necessarily mean greater effectiveness or more side effects.
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