Rehmannia

Rehmannia glutinosa is a foundational herb in traditional Chinese medicine, where its root has been used for centuries in both raw and prepared forms, each believed to offer distinct properties. Research suggests that compounds in rehmannia, including iridoid glycosides and catalpol, may support healthy blood sugar regulation and exhibit anti-inflammatory activity, though much of this evidence comes from animal and cell-based studies rather than large human trials. Studies indicate potential benefits for kidney health, with traditional preparations often included in formulas designed to nourish renal function, and some preliminary research points to a supportive role in addressing anemia by promoting healthy blood cell production. While the traditional record is extensive and modern interest is growing, more rigorous clinical research is needed to fully understand its effects in humans.