Eutectic Mixture of Fenofibric Acid and Syringic Acid: Improvement of Dissolution Rate and Its Antihyperlipidemic Activity

Abstract

Fenofibric acid is a poorly water‐soluble drug with high permeability; thus, it is classified as a Biopharmaceutical Classification System (BCS) class II. This study aimed to prepare a eutectic mixture of fenofibric acid with syringic acid as a coformer to improve its solubility, dissolution rate, and antihyperlipidemic activity. The solvent co‐evaporation method was used to form a eutectic mixture. Solid‐state properties were characterized, solubility and in vitro dissolution profiles were studied, and in vivo antihyperlipidemic effectiveness was investigated in male Wistar rats. The results showed that the eutectic mixture of fenofibric acid‐syringic acid enhanced the solubility (3.4‐fold) and in vitro dissolution rate (3.62‐fold) and significantly improved the antihyperlipidemic activity compared with intact fenofibric acid.