Review on Formulation and Development of Controlled Porosity Osmotic Tablet of Repaglinide

Abstract

The medication delivery method based on the porous osmotic pump provides good regulated release of the medicine for a whole
day. The coating membrane of the porous osmotic pump comprises pore-forming water-soluble additives, which dissolve upon
contact with water to generate a microporous structure in the coating itself. This system's porous osmotic pump supply is unaffected
by a variety of physiological variables. This article summarizes the research on patents related to the controlled porous osmotic
pump for medication delivery. This patent analysis contributes to our understanding of controlled porous osmotic pumps and their
practical applications. The purpose of this study was to create a nanocrystal formulation of Repaglinide for use in the treatment of
diabetes. High pressure homogenization was used for the formulation. Preliminary batches (T1 and T2) were used to test HPH
pressure and cycle range. We retained the 500-1500 bar pressure range and the 5, 8, and 10 cycle range for further study.
Nanocrystal formulation variables such as polymer type, polymer concentration, number of cycles, and high-pressure hydrothermal
(HPH) conditions were optimized using a Taguchi design. Particle size, zeta potential, and in vitro drug release were all measured
to describe the formulations. The optimized formulation (NC 3) was chosen for further research; it had a particle size of 187 nm, a
zeta potential of 29.4 mv, and a % drug release of 80.58%. Analysis of the data showed that several variables had statistically
significant impacts on replies. The improved formulation has a PDI of 0.248, according to the analysis. The drug nanocrystals
aggregated in the SEM, which may be related to the drying out phase. The presence of PEG 4000 may account for the minor shift
in crystallinity seen by DSC. A three-month stability test was performed. It showed that the particle size and zeta potential had not
changed much. Before this mixture may be used for commercial purposes, however, further research is required, especially in
higher animals and humans