Design and in vitro/in vivo evaluation of sustained-release floating tablets of itopride hydrochloride
Authors Ahmed SM, Ahmed Ali A, Ali AMA, Hassan OA
Received 27 June 2016
Accepted for publication 16 August 2016
Published 14 December 2016 Volume 2016:10 Pages 4061—4071
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 3
Editor who approved publication: Dr Qiongyu Guo
Sayed M Ahmed,1 Adel Ahmed Ali,2 Ahmed MA Ali,2,3 Omiya A Hassan2,4
1Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut, 2Department of Pharmaceutics, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt; 3Department of Pharmaceutics, Faculty of Pharmacy, Taif University, Taif, Kingdom of Saudi Arabia; 4Department of Pharmaceutics, Faculty of Pharmacy, Deraya University, El-Minia Gadida, Egypt
Purpose: The aim of the present study was to improve the bioavailability of itopride (ITO) and sustain its action by formulating as a floating dosage form.
Materials and methods: Sustained-release floating tablets of ITO hydrochloride (HCl) were prepared by direct compression using different hydrocolloid polymers such as hydroxypropyl methylcellulose and ethylcellulose and/or methacrylic acid polymers Eudragit RSPM and Carbopol 934P. The floating property was achieved using an effervescent mixture of sodium bicarbonate and anhydrous citric acid (1:1 mol/mol). Hardness, friability, content uniformity, and dissolution rate of the prepared floating tablets were evaluated. The formulation F10 composed of 28.5% Eudragit RSPM, 3% NaHCO3, and 7% citric acid provided sustained drug release.
Results: In vitro results showed sustained release of F10 where the drug release percentage was 96.51%±1.75% after 24 hours (P=0.031).The pharmacokinetic results indicated that the area under the curve (AUC0–∞) of the prepared sustained-release floating tablets at infinity achieved 93.69 µg·h/mL compared to 49.89 µg·h/mL for the reference formulation (Ganaton®) and the relative bioavailability of the sustained-release formulation F10 increased to 187.80% (P=0.022).
Conclusion: The prepared floating tablets of ITO HCl (F10) could be a promising drug delivery system with sustained-release action and enhanced drug bioavailability.
Keywords: itopride HCl, oral drug delivery, stability study, bioavailability
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