Rehmannia root comes from Rehmannia glutinosa and is one of the most important roots in Traditional Chinese Medicine. It is commonly known as Di Huang and has been documented in classical Chinese herbal texts for centuries.
Rehmannia is unique in that it is traditionally prepared in different forms, including raw and prepared versions, each with distinct traditional roles. The root is harvested, cleaned, and dried or processed before use.
In traditional practice, rehmannia is almost always prepared as a decoction and used as part of multi-herb formulas rather than alone. It has a deep, earthy flavor and dense texture.
Because of its long history and central role in classical formulas, rehmannia remains a cornerstone herb in Chinese herbalism today.