Natural Herb Library

Gynura

Chinese
紫背天葵
Pinyin
Zi Bei Tian Kui
Latin
Herba Gynurae Bicoloris
Botanical illustration of Gynura, Gynura bicolor, showing bicolored leaves, purple undersides, flowering head, and diagnostic plant details.
Botanical plate by Kodi .

Known in TCM as Zi Bei Tian Kui (紫背天葵), this sweet, cool herb enters the Liver and Lung. Traditionally, it clears heat and resolves toxicity - Zi Bei Tian Kui is used in regional food-medicine and folk practice for sore throat, inflamed lesions, hot swelling, and minor toxic-heat complaints, most often applied for pharyngitis, furunculosis, and diabetes. Modern research has identified Phenolic among its active constituents.

Part used: Whole herb

TCM Properties

Taste
sweet
Temperature
cool
Channels
Liver, Lung

Traditional Use

Primary Actions

  • Clears heat and resolves toxicity - Zi Bei Tian Kui is used in regional food-medicine and folk practice for sore throat, inflamed lesions, hot swelling, and minor toxic-heat complaints.
  • Cools blood and reduces swelling - traditional use extends to bruised or inflamed tissue, minor bleeding tendencies, and swollen painful lesions where cooling fresh herbs are preferred.
  • Functions as a medicinal vegetable during recovery - because it is commonly eaten as well as medicated, it is often used more gently than a strongly bitter heat-clearing herb.

Secondary Actions

  • This is a regional food-medicine record rather than a heavily standardized pharmacopoeial TCM herb, so property attributions vary more than they do for mainstream materia medica.
  • SOURCE NOTE: identity confusion is common because the names Tian Kui, Zi Bei Tian Kui, Gynura bicolor, and even unrelated Begonia-based plants can overlap in common usage.

Classic Formulas

  • Zi Bei Tian Kui with Pu Gong Ying and Jin Yin Hua - folk heat-toxin pairing for swollen throat, boils, or inflamed superficial lesions.
  • Zi Bei Tian Kui with San Qi or Bai Mao Gen - regional use when cooling, reducing swelling, and supporting minor bleeding control are all desired.
  • Fresh Zi Bei Tian Kui in soups or pounded juice - a food-medicine style preparation during hot, inflamed, or convalescent states.

Classical References

  • Regional Chinese herb references describe Gynura bicolor as a cooling edible herb used for heat-toxic, inflammatory, or blood-related complaints.
  • Me & Qi's Tian Kui Zi monograph explicitly warns not to confuse the unrelated vegetable Zi Bei Tian Kui with the classical seed-based herb Tian Kui Zi.
  • Because this medicine sits partly in folk practice and partly in vegetable culture, its classical formula tradition is lighter than that of more formal Pharmacopoeia herbs.

Modern Research

Active Compounds

  • Phenolic acids and flavonoids including quercetin-rich fractions - major antioxidant constituents
  • Anthocyanins such as malvidin and pelargonidin derivatives - pigments linked to the plant's purple coloration and antioxidant capacity
  • Carotenoids including lutein - notable nutritional phytochemicals in the edible leaves
  • Terpenes, norisoprenoids, and glycosides - additional constituents identified from aerial-part extracts

Studied Effects

  • A 2015 study found that Gynura bicolor extracts reduced oxidative stress and inflammatory mediator production in high-glucose-injured endothelial cells, supporting the plant's reputation as an antioxidative, anti-inflammatory functional food (PMID 25200026).
  • An aqueous-extract study in diabetic mice reported improved glycemic control together with reduced lipid accumulation and inflammatory stress, suggesting that folk antidiabetic use of Gynura bicolor has a plausible preclinical basis (PMID 31059127).
  • A 2019 skin study reported protection against UVB-induced photodamage through anti-apoptotic signaling, reinforcing the plant's broader anti-inflammatory and barrier-support profile (PMID 31538224).
  • A 2021 review of the Gynura genus noted wide ethnomedical use and a generally good safety profile for common species, while also cautioning that pyrrolizidine alkaloids in some Gynura relatives create a real need for correct species identification (PMID 33465439).

PubMed References

Safety & Interactions

Contraindications

  • Cold weak digestion without heat, inflammation, or toxic signs

Cautions

  • Species authentication matters because common names around Zi Bei Tian Kui can refer to more than one plant.
  • Although Gynura bicolor itself is widely eaten, some Gynura relatives raise pyrrolizidine-alkaloid safety questions, so substitution within the genus should be avoided.
  • Most modern efficacy data remain preclinical and food-medicine oriented rather than high-quality clinical trials.

Conditions

Frequently Asked Questions

What is Gynura used for?

Gynura is traditionally used to Clears heat and resolves toxicity - Zi Bei Tian Kui is used in regional food-medicine and folk practice for sore throat, inflamed lesions, hot swelling, and minor toxic-heat complaints., Cools blood and reduces swelling - traditional use extends to bruised or inflamed tissue, minor bleeding tendencies, and swollen painful lesions where cooling fresh herbs are preferred., Functions as a medicinal vegetable during recovery - because it is commonly eaten as well as medicated, it is often used more gently than a strongly bitter heat-clearing herb.. Research has investigated its effects on: A 2015 study found that Gynura bicolor extracts reduced oxidative stress and inflammatory mediator production in high-glucose-injured endothelial cells, supporting the plant's reputation as an antioxidative, anti-inflammatory functional food (PMID 25200026).; An aqueous-extract study in diabetic mice reported improved glycemic control together with reduced lipid accumulation and inflammatory stress, suggesting that folk antidiabetic use of Gynura bicolor has a plausible preclinical basis (PMID 31059127)..

Is Gynura safe during pregnancy?

The safety of Gynura during pregnancy has not been established. Consult a qualified healthcare provider before use.

What are the contraindications for Gynura?

Gynura should not be used in: Cold weak digestion without heat, inflammation, or toxic signs. Consult a qualified practitioner before use.