Nandi, Uttom, Ajiboye, Adejumoke Lara, Patel, Preksha, Douroumis, Dennis ORCID: https://orcid.org/0000-0002-3782-0091 and Trivedi, Vivek ORCID: https://orcid.org/0000-0001-9304-9214 (2021) Preparation of solid dispersions of simvastatin and soluplus using a single-step organic solvent-free supercritical fluid process for the drug solubility and dissolution rate enhancement. Pharmaceuticals, 14 (9):846. ISSN 1424-8247 (Online) (doi:10.3390/ph14090846)

Preview

PDF (Open Access Article) 51937 TRIVEDI_Preparation_Of_Solid_Dispersions_Of_Simvastatin_(OA)_2021.pdf - Published Version Available under License Creative Commons Attribution. Download (3MB) | Preview

Abstract

The study was designed to investigate the feasibility of supercritical carbon dioxide (scCO2) processing for the preparation of simvastatin (SIM) solid dispersions (SDs) in Soluplus® (SOL) at temperatures below polymer’s glass transition. The SIM content in the SDs experimental design was kept at 10, 20 and 30% to study the effect of the drug–polymer ratio on the successful preparation of SDs. The SIM–SOL formulations, physical mixtures (PMs) and SDs were evaluated using X-ray diffraction (XRD), differential scanning calorimetry (DSC), attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), and dissolution studies. The scCO2 processing conditions and drug–polymer ratio were found to influence the physicochemical properties of the drug in formulated SDs. SIM is a highly crystalline drug; however, physicochemical characterisation carried out by SEM, DSC, and XRD demonstrated the presence of SIM in amorphous nature within the SDs. The SIM–SOL SDs showed enhanced drug dissolution rates, with 100% being released within 45 min. Moreover, the drug dissolution from SDs was faster and higher in comparison to PMs. In conclusion, this study shows that SIM–SOL dispersions can be successfully prepared using a solvent-free supercritical fluid process to enhance dissolution rate of the drug.

Item Type:	Article
Uncontrolled Keywords:	simvastatin, solid dispersions, supercritical carbon dioxide, soluplus polymer, drug dissolution enhancement
Subjects:	Q Science > Q Science (General) Q Science > QD Chemistry
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > Medway School of Pharmacy
Last Modified:	12 Dec 2025 12:41
URI:	https://gala.gre.ac.uk/id/eprint/51937

Actions (login required)

View Item

Downloads