Formulation and Evaluation of Floating Microspheres of Sitagliptin

Gastro retentive dosage forms have potential for use as controlled- release drug delivery systems. Gastro retentive floating drug delivery systems have a bulk density lower than that of gastric fluids and thus increase residence time of drug in stomach and provide controlled delivery of many drugs....

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Bibliographic Details
Published in:Research journal of pharmacy and technology 2023-05, Vol.16 (5), p.2251-2256
Main Authors: Rao, A. Anka, Malothu, Narender, Rao, A. Narayana, Naga Raju, Bandaru, Mohammed, B. Jahasultana
Format: Article
Language:English
Subjects:
Cellulose acetate
Drug delivery systems
Drug dosages
Efficiency
Ethanol
Ions
Morphology
Particle size
Patient compliance
Polymers
Scanning electron microscopy
Solvents
Viscosity
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Summary:Gastro retentive dosage forms have potential for use as controlled- release drug delivery systems. Gastro retentive floating drug delivery systems have a bulk density lower than that of gastric fluids and thus increase residence time of drug in stomach and provide controlled delivery of many drugs. The aim of the present study is formulation and characterization of floating microspheres using Sitagliptin as a model drug for the management of type-2 diabetes mellitus. Floating microspheres were prepared by oil-in-water emulsion solvent evaporation technique using ethyl cellulose and eudragit S-100 as release retarding polymers. The floating microspheres were evaluated for percentage yield (%), particle size, drug content, drug entrapment efficiency, in-vitro floating ability and in-vitro drug release studies. The surface morphology of prepared microspheres was characterized by scanning electron microscopy. The microspheres were found to be spherical in shape and porous in nature. Compatibility studies were performed by fourier transform infrared (FTIR) technique. The prepared microspheres showed prolonged drug release of 12 h and remain buoyant for more than 12 h. In-vitro release kinetics were studied in different release kinetics models like zero order, first order, higuchi and korsmeyer peppas model and the best fit model was found to be higuchi plot with release exponent n value less than 0.89. It was concluded that developed floating microspheres of Sitagliptin offers a suitable and practical approach for prolonged release of drug over an extended period of time and thus oral bioavailability, efficacy and patient compliance is improved.
ISSN:0974-3618
0974-360X
0974-306X
DOI:10.52711/0974-360X.2023.00370