Centella asiatica leaf extract, also named gotu kola extract, there are a sea of diverse active ingredients, mainly contains madecassic acid, asiatic acid, madecassoside, asiaticoside and total triterpenes ( as asiaticoside & madecassoside). The above items active ingredients are derived from whole gotu kola herb. According to the various methods for determining the content of the main ingredients, madecassoside and madecassoside in high-performance liquid phase (HPLC), they are divided into export standards and Chinese Pharmacopoeia standards.