FORMULATION AND CHARACTERIZATION OF MATRIX AND TRIPLE-LAYER MATRIX TABLETS FOR CONTROLLED DELIVERY OF METOPROLOL TARTRATE. Int. J. Pharm. Sci. Drug Res. [Internet]. 2011 Jan. 1 [cited 2025 Oct. 17];3(1):23-8. Available from: https://ijpsdronline.com/index.php/journal/article/view/117