Drug release from hydrogel matrices

Description of the kinetics of drug release from hy drogels is a domain of steadily increasing academic and industrial importance. The aim of this paper is to review mathematical approaches to drug release from hydrogel matrix devices. In the first section the p arameters of hydrogel structure are described. Than t e phenomena that influencing resulting drug release a re discussed. Finally, mechanisms of physical relea s and release with chemical reaction are studied. In this section mathematical expression that predicting dr ug release profiles are described.