Formulation and Physicochemical Characterization of Buccoadhesive Microspheres Containing Diclofenac Sodium
Author(s):
Abstract:
Purpose
The present study involves preparation and evaluation of diclofenac buccal-mucoadhesive microparticles for prolongation of buccal residence time.Methods
The microparticles were prepared by modified double-emulsion dehydration method (O1/W/O2) using sodium carboxymethylcellulose (CMC-Na) as mucoadhesive polymer. Calcium chloride was used as a cross-linking agent. Buccal-mucoadhesive microparticles with different drug to polymers ratios were prepared and characterized by encapsulation efficiency, particle size, DSC (Differential Scanning Calormetric), flowability, degree of swelling, surface pH, mucoadhesive property and drug release studies.Results
The best drug to polymer ratio in microparticles was 1:5 (F3) with CMC-Na. F1 microparticles showed loading efficiency 51.43% and mean particle size 1013.92 μm. The DSC showed stable character of drug in microparticles and revealed amorphous form. Microparticles had slower release than the commercial tablet (pConclusion
It may be concluded that drug loaded buccal-mucoadhesive microparticles are a suitable delivery system for DS.Keywords:
Language:
English
Published:
Advanced Pharmaceutical Bulletin, Volume:4 Issue: 3, Sep 2014
Pages:
295 to 301
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