Formulation and the effect of channeling agents on the release pattern of ambroxol hydrochloride from HPMC K4M matrix tablets. Asian Journal of Pharmaceutical and Health Sciences, [S. l.], v. 2, n. 4, p. 467–471, 2012. DOI: 10.5530/br3kvn78. Disponível em: https://ajphs.com/index.php/ajphs/article/view/667. Acesso em: 31 jan. 2026.