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Herb of the Month: Rehmannia (Rehmannia glutinosa)

Also known as Chinese Foxglove, Rehmannia is a herb traditionally used in Chinese Herbal Medicine for fevers, some cases of dry mouth and constipation. ¹ It is also anti-inflammatory and in western herbal medicine is commonly used to help support adrenal function. ¹ This herb grows natively in Korea, China and Japan, exhibiting yellowish or reddish-violet bell shaped flowers. In the US this plant is grown for ornamental purposes, in eastern countries the plant is grown for the medicinal benefits of the root.²

While most of the literature and use of Rehmannia is based on traditional prescribing, some experimental studies support the use of this herb as an anti-inflammatory and show potential for its use in the management of skin conditions such as dermatitis.³ It is said to clear heat from the body, ⁴ thus its use in the treatment of fevers. Chinese herbalists use Rehmannia as a blood, kidney and liver tonic to help those presenting with lower back and leg weakness, dizziness, tinnitus and premature greying of the hair. ⁴

Chinese herbalists also use Rehmannia for its restorative properties as a tonic, making it a useful herb to promote health. They often prescribe it to support kidney and urinary tract health, improve digestive function and promote healthy blood circulation. ². ²

Rehmannia can be found in a variety of herbal preparations, both Western and Chinese. The tincture is also used by many herbalists and naturopaths in liquid herbal formulations addressing adrenal and kidney health.


3. Kim SH, Yook TH and Kim JU, 2017, “Rehmanniae radix, an effective treatment for patients with various inflammatory and Metabolic diseases: results from a review of Korean Publications”, Journal of Pharmacopuncture, Vol. 20(2), pp. 81 – 88. [This review was supported by The National Research Foundation of Korea and funded by the Korea Government.]