Chinese foxglove

Rehmannia glutinosa

Chinese Foxglove (Rehmannia glutinosa) is a traditional Chinese medicinal herb known for its use in strengthening the kidneys and improving conditions such as kidney deficiency, fatigue, and osteoporosis.

Chinese Foxglove (Rehmannia glutinosa) dried pieces of the herb arranged on a wooden table for reference

Taxonomy

The Chinese Foxglove, or Rehmannia glutinosa, is a species belonging to the genus Rehmannia in the family Orobanche, which is part of the order Lamiales, class Eudicots, division Magnoliophyta, and kingdom Plantae.

The following table shows the full taxonomy of this plant.

Rank Name
Kingdom Plantae
Division
Class
Order
Family Orobanche
Genus Rehmannia
Species Rehmannia glutinosa

Morphology

The Chinese Foxglove (Rehmannia glutinosa) is a perennial herb characterized by its thick, fleshy roots that are typically dark brown to black in color, smooth in texture, and have a distinctive sweet, mucilaginous taste when chewed.

Distribution

Chinese Foxglove (Rehmannia glutinosa) is native to East Asia, particularly China, where it grows in moist environments such as mountain forests, riverbanks, and shaded areas in regions like Yunnan, Sichuan, and Guizhou.

Traditional Uses

Traditional uses of Chinese Foxglove (Rehmannia glutinosa) include treating kidney deficiency, infertility, and diabetes, as well as enhancing vitality and supporting immune function in traditional Chinese medicine.

Medicinal Systems

This plant has been traditionally used in Traditional Chinese Medicine (TCM) and other East Asian medicinal systems for centuries to support kidney function, reduce inflammation, and promote longevity.

Phytochemistry

The phytochemistry of Chinese Foxglove (Rehmannia glutinosa) involves the presence of iridoid glycosides, such as loganin and aucubin, as well as alkaloids, steroidal saponins, and various phenolic compounds, which contribute to its pharmacological properties.

Pharmacology

Rehmannia glutinosa exhibits significant pharmacological properties including anti-inflammatory, immunomodulatory, nephroprotective, and neuroprotective effects, making it a key herb in traditional Chinese medicine for managing conditions such as kidney disease, hypertension, and neurological disorders.

Botanical Identification

Rehmannia glutinosa is a perennial herb native to eastern Asia. It belongs to the family Geraniaceae and is commonly known as Chinese Foxglove. The plant has fleshy roots, ovate leaves, and pink to purple flowers. It is also referred to as Di Huang in traditional Chinese medicine.

Chinese foxglove Identification.

Active Compounds

Rehmannia glutinosa contains key active compounds such as glycosides, flavonoids, and alkaloids. These bioactive components work synergistically to support various physiological functions. Their combined action enhances the herb's therapeutic potential in traditional Chinese medicine.

  • Glycoside
  • Flavonoid
  • Alkaloid

Chinese foxglove Compounds.

Therapeutic Indications

System Condidtion Action
Urinary Kidney dysfunction, kidney failure, kidney inflammation, kidney deficiency Renal protective, diuretic, anti-inflammatory, tonic
Endocrine Diabetes, diabetes mellitus Antidiabetic
Nervous Fatigue, insomnia, chronic fatigue syndrome Tonifying, sedative, tonic

Chinese foxglove Actions.

Chinese foxglove Uses.

Preparation Methods

Decoction: Used for treating kidney disorders and diabetes due to its tonifying properties.

Powder: Used for digestive issues and to replenish energy levels.

Infusion: Used for respiratory conditions and to reduce inflammation.

Safety Profile

Rehmannia glutinosa is generally considered safe when used in recommended doses. However, it may cause gastrointestinal discomfort in some individuals. It is contraindicated in pregnant women and those with severe hypotension due to its potential to lower blood pressure. Always consult a healthcare provider before use.

References

  1. Yu, Yin, Mao, Li. "[A new cultivated technique of Rehmannia glutinosa by sprout cutting]." Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials
  2. Li, Mao, Huang, Jiang, Pan. "[Studies on cultivation techniques for Rehmannia glutinosa Libosch. in summer]." Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
  3. Li, Qi, Zhou, Wang. "[Comparative analysis of character on germplasm resources of Rehmannia glutinosa]." Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
  4. Xue, Ge, Zhang, Liu. "[Progress on research of tissue culture of Rehmannia glutinosa]." Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
  5. Wang, Xie, Sun, Zhang. "[Progress on germplasm enhancement and breeding of Rehmannia glutinosa]." Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica