DESIGN OF EXTENDED RELEASE MATRIX TABLET OF TRAMADOL HYDROCHLORIDE USING COMBINATION OF HYDROPHOBIC AND HYDROPHILIC POLYMER. International Journal of Pharmaceutical Sciences and Drug Research, [S. l.], v. 9, n. 5, p. 214–219, 2017. DOI: 10.25004/IJPSDR.2017.090502. Disponível em: https://ijpsdronline.com/index.php/journal/article/view/560.. Acesso em: 24 oct. 2025.