What does potency measure in pharmacology?

Potency in pharmacology refers to the amount of a drug that is needed to produce a specific effect. It indicates the strength of a drug in relation to its effectiveness at achieving desired results. A highly potent drug will require a lower dose to elicit the same effect compared to a less potent drug, which would necessitate a higher dose to achieve similar effects. This concept is crucial in medication dosing and effectiveness, as it helps healthcare professionals determine the most appropriate and effective dose for treatment.

Understanding potency is essential for safe prescribing and ensuring that patients receive the appropriate amount of medication to avoid under-treatment or over-treatment, which can result in adverse effects or inadequate therapeutic responses.