The following pharmacological definition has been taken from the Pharmacology and Experimental Therapeutics Department Glossary at Boston University School of Medicine.
The curve describing the relationship between dose (as the independent variable) and duration of drug effect (as the dependent variable, T). The slope of the curve is always positive, in contrast to the slope of the time-concentration curve (q.v.). There has been increased interest in the dose-duration curve as a useful measure of drug action since Levy’s demonstration that the constants describing the straight log dose-duration curve of a drug can be used to infer pharmacokinetic and pharmacodynamic properties of the drug, such as the elimination half life and the threshold dose. (Clin. Pharmacol. & Therap. 7: 362, 1966).
The copyright of the text is hold by Trustees of Boston University. Permission has been granted for its use in this blog.