Formulation No. PLGA/PLA: 45/55 (%) PCL (%) Eudragit ® RS100 (%) 24 80 20 0 25 60 40 0 26 40 60 0 27 20 80 0 28 80 0 20 29 60 0 40 30 40 0 60 31 20 0 80

Table 5: Polymeric formulations used in the third stage of the experiments.