Berberine hydrochloride is an alkaloid extracted from medicinal plants including Coptis chinensis, Phellodendron chinense, and Berberis species. As an isoquinoline compound, it demonstrates antibacterial, anti-inflammatory, and intestinal function-regulating properties. This compound is primarily utilized for treating intestinal infections such as bacterial dysentery and gastroenteritis, while also supporting improvements in glucose and lipid metabolism.