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Formulation and evaluation of different floating tablets containing metronidazole to target stomach

Abdel Rahim, S. and Elkordy, Amal (2015) Formulation and evaluation of different floating tablets containing metronidazole to target stomach. Current Drug Delivery Journal, 12 (4). ISSN 1567-2018

Item Type: Article


The purpose of this study is to formulate and develop tablets dosage form containing Metronidazole which has swelling and floating properties as a gastroretentive controlled-release drug delivery system to improve drug bioavailability. Fifteen different formulations of effervescence-forming floating systems were designed using HPMC K15M, xanthan gum, co-povidone, Eudragit® RL PO, pluronic® F-127 and/or polypropylene foam powder as swelling agents and sodium bicarbonate with/ without citric acid as gas-forming agents at different compositions. Six out of these 15 formulations which have satisfactory tablet floating behaviour were further studied with the incorporation of Metronidazole. The tablets were evaluated based on tablet physicochemical properties, floating behaviour, swelling ability and drug dissolution studies which were carried out using 0.1M HCl at 37°C for 8 hours. Furthermore, evaluation of the powder mixtures using Fourier transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC) and scanning electron microscope (SEM) were investigated. Most of the tablets show good physicochemical properties except for F11 which contains pluronic® F-127 as its release-retarding matrix-forming polymer. Other formulations show high swelling capacity, ability to float for at least 8 hours in vitro and have sustained drug release characteristics. Data obtained indicated that F3 which contains HPMC (12.5%w/w), xanthan gum (25%w/w), co-povidone (12.5%w/w) and sodium bicarbonate (31.7%w/w) is a suitable formulation with short floating lag time, good floating behaviour and sustained drug release for at least 8 hours in vitro with a zero order kinetic. Combinations of HPMC K15M and xanthan gum as swelling agents show synergistic effect in retarding drug release and are suitable in providing the most sustained drug release system.

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More Information

Depositing User: Barry Hall


Item ID: 5336
Identification Number:
ISSN: 1567-2018

Users with ORCIDS

ORCID for Amal Elkordy: ORCID iD

Catalogue record

Date Deposited: 15 Apr 2015 10:56
Last Modified: 18 Dec 2019 15:37


Author: Amal Elkordy ORCID iD
Author: S. Abdel Rahim

University Divisions

Faculty of Health Sciences and Wellbeing
Faculty of Health Sciences and Wellbeing > School of Pharmacy and Pharmaceutical Sciences


Sciences > Pharmacy and Pharmacology

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