The study examined the sustained release of neem from the polymeric carrier system chitosan by varying the drug content, ionic strength of the release medium, and pH. Six different kinetic models, i.e., Korsmeyer-Peppas (KP), Peppas-Sahlin (PS), Higuchi, Hixson-Crowell, Zero order, and First order were used to investigate the drug release kinetics. Based on the R