Berberine hydrochloride, latin name: rhizoma coptidis, common name: coptis root extract, product specification: ratio: 4:1~20:1 ; 5%, 10% alkaloids hplc 97% (berberine hydrochloride) hplc 98% (berberine sulfate) hplc 10%-98% (berberine), appearance: yellow brown powder--yellow powder, test method: hplc / titration, molecular formula: c30h50o2, molecular weight: 442.72,