E. I., AKPABIO; D. E., EFFIONG; T. O., UWAH; N. I., SUNDAY. FORMULATION AND IN-VITRO EVALUATION OF THEOPHYLLINE HYDROCHLORIDE EFFERVESCENT FLOATING TABLETS: EFFECT OF POLYMER CONCENTRATION ON TABLET BUOYANCY. International Journal of Pharmacy and Pharmaceutical Sciences, [S. l.], v. 12, n. 1, p. 59–65, 2020. DOI: 10.22159/ijpps.2020v12i1.35055. Disponível em: https://www.journals.innovareacademics.in/index.php/ijpps/article/view/35055. Acesso em: 5 dec. 2025.