Abstract
The objective of the current investigation was to enhance the solubility and dissolution rate of loratadine using solid dispersions (SDs) with Gelucire 50/13. SDs of loratadine using Gelucire 50/13 as carrier were prepared by the solvent evaporation method, characterized for drug content, dissolution behavior, and physicochemical characteristics by differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) studies. At 10 % concentration of Gelucire 50/13, the increase in solubility was around 100-fold compared with pure drug. The solubility of loratadine in the presence of Gelucire 50/13 in water showed linear increase with increasing concentrations of Gelucire indicating AL-type solubility diagrams. The mean dissolution time (MDT) of loratadine decreased after preparation of SDs with Gelucire 50/13 indicating increased dissolution rate. FTIR studies showed the stability of loratadine and the absence of a well-defined interaction. DSC and XRD studies revealed the amorphous state of loratadine in SDs which was further confirmed from SEM. From the dissolution parameters, it is evident that the solubility and dissolution rate of loratadine was enhanced by SDs with Gelucire 50/13.
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