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FORMULATION AND EVALUATION OF AMBROXOL HYDROCHLORIDE SUSTAINED RELEASE TABLET

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Abstract (2. Language): 
The objective of the study was to develop matrix tablets of Ambroxol Hydrochloride for Sustained Release. Hydroxy Propyl Methyl Cellulose (HPMC) K4M and Guar Gum as the retardant polymers and study the effect of various formulation factors such as polymer proportion, polymer type and e ffect of filler type on the in vitro release of the drug. Matrix tablets were prepared by wet granulation method and prepared tablets were evaluated for weight variation, friability, hardness, thickness and in vitro dissolution studies. All the granules of formulations showed compliance with pharmacopieal standards. In vitro release studies revealed that the release rate decreased with increase polymer proportion and hydrophobic polymers retard the drug release more than hydrophilic polymers. The formulations F7 sustained release of drug for 12 hrs with 91.56%. Because of swelling property increa sed the drug release profile to a small extent due to change in swelling at the tablet surface. The kinetic treatment showed that the mechanism of drug release. The developed sustained release matrix tablets of Ambroxol Hydrochloride up to 12 hrs can overcome the disadvantages of conventional tablets.

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