Drug substanceAn ingredient intended to exert pharmacologic action or other direct effect in the diagnosis, cure, mitigation, or prevention of disease or to affect any function of the body. Along with other ingredients (excipients,) it is used to formulate a medicinal product.
Drug toleranceTolerance of a medicine may be considered as the ability of the body to endure a certain dose of a medicine. In contrast, drug tolerance refers to a decreasing response to repeated constant doses of a medicine, or the need for increasing doses to maintain a constant response. Drug tolerance(...)
EffectivenessThe capability of a medicine to produce a desired or expected effect in the real world clinical setting. When talking in terms of efficacy vs. effectiveness, effectiveness relates to how well a treatment works in the practice of medicine, as opposed to efficacy, which measures how well a(...)
EfficacyEfficacy refers to the ability of a medicine to provide a beneficial effect (a positive benefit/risk ratio) when studied in a clinical trial. When talking in terms of efficacy vs. effectiveness, effectiveness relates to how well a treatment works in the real world practice of medicine, as(...)
EfficiencyIn the context of health economics, efficiency of a medicine is a measure of its ability to provide a beneficial effect against its costs to individuals or society. The most efficacious treatment may not be the most efficient (cost-effective) option, for example making it unaffordable for the(...)
