Potency
The amount of drug needed to produce a defined effect. Expressed as EC50 or ED50 — lower values indicate higher potency. Potency is clinically less important than efficacy and safety.
Ví dụ
- Fentanyl more potent than morphine
- Hydrochlorothiazide vs chlorthalidone
- Potency affects dose, not max effect
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The amount of drug needed to produce a defined effect. Expressed as EC50 or ED50 — lower values indicate higher potency. Potency is clinically less important than efficacy and safety.