A New Method for Studying the Kinetics of the Release of Poorly Soluble API from Solid Oral Dosage Forms on the Example of Quertin®

Abstract

In this paper, it is proposed to consider a new method developed for studying the kinetics of release of substances that are poorly soluble in aqueous media on the example of quercetin. The study object was the drug containing plant bioactive components – Quertin® chewable tablets, 40 mg, 3 blisters, 10 pcs – produced by PJSC SIC “Borshchahivskiy CPP”. An Agilent 1290 Infinity II LC System liquid chromatograph with an Agilent 6530 mass selective detector (Agilent Technologies) was used for the analysis. Solubility profiles were studied in accordance with the requirements of the Biopharmaceutical Classification System (BCS). The solubility limit of the substance in the media studied has been determined. A method for the quantitative determination of quercetin in test media in the range of specified concentrations with high sensitivity and selectivity has been developed. The dissolution of Quertin® chewable tablets in 3 different aqueous dissolution media with pH 1.2, pH 4.5 and pH 6.8 was studied, the dissolution profiles were compared, and the f2 factor was calculated. This factor is a criterion for evaluating the study by comparing dissolution kinetics with in vivo results. The results obtained indicate that the approach proposed to studying the kinetics of the release of substances that are sparingly soluble in aqueous solutions allows us to correctly assess the release of such substances in accordance with the requirements of the BCS. The method developed has been validated.

Keywords

• quercetin
• biopharmaceutical classification system
• quantitative determination
• method development
• bioequivalence
• bioavailability
• solubility
• dissolution test