Rehmannia root

Ingredient Profile

Modern Research Perspective

Research on raw Rehmannia Root examines iridoid glycosides, phenylethanoid glycosides, polysaccharides, and other constituents in cellular and animal models. Reported directions include anti-inflammatory, antioxidant, hematologic, metabolic, and endocrine-related mechanisms, but extraction and processing strongly affect composition.

Human clinical evidence specific to raw Rehmannia Root is limited and often comes from combined interventions. The raw and processed materials should not be treated as interchangeable; standardized dosing, pharmacokinetics, interactions, and long-term safety require further study.

Traditional Function

In traditional Chinese medicine, Rehmannia Root is sweet and cold. The raw material is used to clear heat, cool the blood, and nourish yin while generating fluids. Interpretation depends on whether the authenticated material is raw or processed, because processing creates a different medicinal identity and traditional function.