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Formulation of a modified release metformin. HCl matrix tablet: influence of some hydrophilic polymers on release rate and in-vitro evaluation . Braz. J. Pharm. Sci. [Internet]. 2011 Sep. 1 [cited 2024 Jul. 22];47(3):483-9. Available from: https://journals.usp.br/bjps/article/view/10909