📖 Factorial Design Approach as a Tool of Optimization Methodology. Formulation, Development and Evaluation of Transdermal Patch.

The main aim of the present study was to formulate transdermal patch of Terminaliaarjuna bark extract for control drug delivery system in CVS disorders. Extraction of Terminaliaarjuna bark was done by using maceration technique whereas quantitative estimation of arjunolic acid was performed by using titration method extract. From the preliminary phytochemical test it was found that the alkalis, cardiac glycoside, tannins, tri terpenoids and saponins present in extract. In order to predict the optimum performance of prepared transdermal patch of Terminaliaarjuna we adopted a 32 factorial design approach. Amount of HPMC K100 and Eudragit RL100 were selected as independent variables and percent drug release as dependent variable. Various parameter studied include thickness, flatness, moisture uptake, moisture content, tensile strength, drug content and drug diffusion.