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Multiple dosing models absorption

These linear kinetic models and diffusion models of skin absorption kinetics have a number of features in common they are subject to similar constraints and have a similar theoretical basis. The kinetic models, however, are more versatile and are potentially powerful predictive tools used to simulate various aspects of percutaneous absorption. Techniques for simulating multiple-dose behavior evaporation, cutaneous metabolism, microbial degradation, and other surface-loss processes dermal risk assessment transdermal drug delivery and vehicle effects have all been described. Recently, more sophisticated approaches involving physiologically relevant perfusion-limited models for simulating skin absorption pharmacokinetics have been described. These advanced models provide the conceptual framework from which experiments may be designed to simultaneously assess the role of the cutaneous vasculature and cutaneous metabolism in percutaneous absorption. [Pg.2423]

Following multiple oral doses of a drug that obeys bi-exponential kinetics after IV administration (two-compartment model), the estimation of the Css,max and Css,min involves a complicated set of exponential constants for absorption and distribution, as shown below. [Pg.1013]


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See also in sourсe #XX -- [ Pg.266 , Pg.267 , Pg.268 , Pg.269 ]




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