BACKGROUND
The root of Rehmannia glutinosa (Gaertn.) DC. has been used in China for more than 2000 years to treat various diseases including diabetes mellitus (DM) and its complications. Steamed rehmannia root (SRR) is one of the mainly used forms. During its preparation, the material has the chance
OBJECTIVE
Liuwei Dihuang (Rehmannia complex, RC) decoction, a classic prescription of Traditional Chinese Medicine (TCM), has been used in treating diabetic nephropathy (DN). Among the 6 crude medicines which contains Corni fructus is recognized as the active fraction for its effectiveness. We aimed