drug efficacy

Drug efficacy refers to how well a medication produces the intended beneficial effect in treating a condition or disease. It indicates the ability of the drug to achieve its desired outcome when used as directed. Efficacy is often determined through clinical trials, comparing the results of the drug to a placebo or other treatments. A highly effective drug consistently provides significant improvement for most patients, while lower efficacy means less consistent or weaker effects. Understanding efficacy helps healthcare providers choose appropriate treatments to maximize patient health benefits.