To enhance dissolution rate of poorly water-soluble drugs: glucosamine hydrochloride as a potential carrier in solid dispersion formulations

Colloids and Surfaces. B, Biointerfaces
Hiba Al-HamidiAli Nokhodchi

Abstract

The solid dispersion technique is the most effective method for improving the dissolution rate of poorly water-soluble drugs, however this is reliant on a suitable carrier and solvent being selected. The work presented explores D-glucosamine HCl (G-HCl) as a potential hydrophilic carrier to improve dissolution rate of a poorly water-soluble drug, carbamazepine (CBZ), from physical mixtures and solid dispersion formulations. The effect of different solvents in the preparation of solid dispersion formulations was also investigated. Solid dispersions of the drug and G-HCl were prepared using different ratios by the conventional solvent evaporation method. Different solvents (ethanol, acetone and water) were used as second variable in the preparation of solid dispersions. Physical mixtures of CBZ and G-HCl were also prepared for comparison. The properties of all solid dispersions and physical mixtures were studied using a dissolution tester, FT-IR, SEM and DSC. These results showed that the presence of glucosamine can increase dissolution rate of CBZ compared to pure CBZ. All solid dispersions of CBZ-G-HCl showed considerably a higher dissolution rate than the corresponding physical mixtures. The presence of water during preparatio...Continue Reading

Citations

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