DESIGN AND DEVELOPMENT OF SUSTAINED RELEASE AMBROXOL HYDROCHLORIDE MATRIX TABLETS USING THE COMBINATION GUAR GUM AND KARAYA GUM
Sunil Kumar*, Someswara Rao B , Suresh V Kulkarni
ABSTRACT
In the present investigation, an attempt was made to design and
develop of Sustained Release Ambroxol Hydrochloride Matrix Tablets
using the combination Guar gum and Karaya gum, in order to improve
efficacy, reduce the frequency of administration, and better patient
compliance. Ambroxol hydrochloride is a potent mucolytic agent
capable of inducing bronchial secretions used in the treatment of
respiratory disorders. The Sustained release matrix tablets containing
75 mg Ambroxol hydrochloride were developed using different drug:
polymer ratios. Sustained release matrix tablets were prepared by wet
granulation method. Granules were prepared and evaluated for loose bulk density, tapped
bulk density, compressibility index and angle of repose, shows satisfactory results. The
prepared tablets were further evaluated for uniformity of weight, hardness, friability,
thickness, content uniformity, In-vitro dissolution, drug-excipients interactions. The FT-IR
studies revealed that there was no chemical interaction between drug and excipients. In-vitro
release studies were carried out using USP XXII type II (paddle method) dissolution
apparatus at 50 rpm by taking 900 ml of 0.1 N HCl (pH 1.2) as dissolution medium for first 2
hours and later replacing it with 900 ml pH 6.8 phosphate buffer solution for rest of the time
period at 37 ± 0.50C. The release data was fitted to various mathematical models such as,
Higuchi, Korsmeyer-Peppas, First-order, and Zero order to evaluate the kinetics and
mechanism of the drug release. Among all the formulations, F 4 shows 98.21 % better
controlled release at the end of 11 hr. The drug release of optimized formulations F-4
follows zero order kinetics. The stability studies were carried out according to ICH guideline which indicates that the selected formulations were stable.
Keywords: Ambroxol Hydrochloride, Matrix tablet, Sustained release, Karaya gum, Guar gum, Wet Granulation.
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