DEVELOPMENT OF THE COMPOSITION AND TECHNOLOGY OF THE GEL BASED ON DIHYDROQUERCETIN

Abstract. Dihydroquercetin (DHQ) is a bioflavonoid from the flavonol group with a wide spectrum of pharmacological activity. Antioxidant, strengthens the walls of blood vessels. Medicinal product based on dihydroquercetin for topical use. Aim. Development of a dosage form of dihydroquercetin in the form of a gel for topical use and evaluation of its physicochemical properties, general toxic effects and safety. Materials and methods. The gel was obtained on an EKROS PE-8100 laboratory overhead stirrer (EKROS, Russia). The substance of dihydroquercetin of the LLC "Chemistry of Woods" company was used. Dimethyl sulfoxide, glycerin, and polyethylene glycol 400 were used as solvents for the active substance. Gelling agents were used, such as: hydroxyethyl cellulose, carbomer brand Carbopol Ultrez 10, poloxamer 407, polymer compositions of the French company Seppic Sepineo p600 and Sepineo Derm. Benzyl alcohol and sodium benzoate are used as antimicrobial preservatives. Trilon B was used as a stabilizer. Purified water served as a dispersion medium. Aggregate stability of the gels was evaluated according to GOST 29188.3-91 COSMETIC PRODUCTS [1]. Colloidal stability - on the centrifuge of the laboratory brand PE-6906. Thermal stability was determined by thermostating the gel samples in an electric dry-air thermostat of the TS-1/20 SPU brand. Dynamic viscosity was determined on a Brookfield DV3T rotational viscometer [2]. The release of DHQ from the model gel compositions was determined by L. The content of DHQ in the dialysate was determined by HPLC (n=5) [3]. Results and discussion. The solubility of the substance of dihydroquercetin was determined for the implementation of the technological process for the manufacture of a gel based on it with increased bioavailability. Chromatography conditions were selected for the determination of dihydroquercetin in the gel by HPLC-UV. The safety and absence of a local irritant effect were established with the use of 2% dihydroquercetin gel. Conclusion. As a result of the research, the composition and technology of a 2% dihydroquercetin gel for topical use have been developed. A technological scheme for obtaining the gel has been developed. The results of the toxicity study of 2% dihydroquercetin gel showed that the gel is non-toxic and safe drug.