Formulation and In-Vitro Evaluation of Controlled Release Matrix Tablets of Diltiazem Hydrochloride Using Different Rate Controlling Polymers

Fig. (2) Diltiazem Hydrochloride release profile from directly compressed matrices of Ethocel 45 Premium at Drug to Polymer (D: P) of 10:1, 10:2 and 10:3 and Herbesser^® Conventional Tablets.