The following pharmacology definition has been taken from the Pharmacology and Experimental Therapeutics Department Glossary at Boston University School of Medicine.
The “elimination rate constant” for a drug eliminated according to the laws of first-order reaction kinetics; the slope of the plot of the logarithm of concentration against time, when natural logarithms, i.e. logarithms to the base e, are used.
t1/2 = 0.693/kel. kel = 2.303b. ClT = kel Vd. AUC from Tn to infinity = Cn/Kel.
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