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Abstract

Optimization of Glipizide Floating Matrix Tablet Using Simplex Lattice Design

Author(s): Meenakshi Patel*, FarhatJahan Shaikh, Vandana Patel and Naazneen Surti
Babaria Institute of Pharmacy, BITS Edu Campus, Varnama, Vadodara-391240, Affiliated to Gujarat Technological University, Gujarat, India

Correspondence Address:
MEENAKSHI PATEL, Babaria Institute of Pharmacy, BITS Edu Campus, Varnama, Vadodara-391240, Affiliated to Gujarat Technological University, Gujarat, India, E-mail: meenakshipatel.bip@bitseducampus.ac.in


The aim of the present study was to prepare the floating matrix tablet of glipizide by applying Simplex lattice design using kappa carrageenan, Hydroxypropylmethylcellulose K15M and sodium bicarbonate as independent variable. The similarity factor (f2), time to release 50 % of drug and time to release 90 % of drug were taken as dependent factors. A total of 14 batches were prepared as given by Design-Expert® Software (version- 9.0.6, Stat-Ease) and the response obtained for the dependent variables was statistically evaluated. Radiological study was performed on healthy albino rabbits for checking the gastroretention for optimized floating tablet of glipizide. The results indicated that the formulation G-simplex lattice design 8 with 50 mg of Hydroxypropylmethylcellulose, 30 mg of kappa carrageenan and 10 mg of sodium alginate is the optimized formulation with highest desirability. The in vivo X-ray imaging study clearly revealed that the optimized formulations remained afloat in gastric fluid up to 12 h in the stomach of rabbit, which shows the possibility of the formulation to remain in the stomach of human being for the desired period. It was concluded that the simplex lattice design is suitable for efficiently optimizing the floating matrix tablet of glipizide.

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