Jié Gěng · Platycodon Root
Jié Gěng (桔梗, Platycodon Root) is a herb of Neutral nature and Bitter, Pungent flavor, in the “Phlegm-transforming herbs” category. Tradition uses it to open Lung Qi, Transform Phlegm, Benefit Throat.
Energetic profile
- Pinyin name
- Jié Gěng
- Characters
- 桔梗
- Botanical name
- Platycodon grandiflorum (Jacq.) A.DC.
- Family
- Campanulaceae
- Part used
- Root
- Nature
- Neutral
- Flavor
- Bitter, Pungent
- Meridians
- Lung
- Category
- Phlegm-transforming herbs
- Toxicity
- Slightly toxic
- Pregnancy
- No contraindication described (always consult)
- Origin
- China, Korea, Japan
Actions according to tradition
- Open Lung Qi
- Transform Phlegm
- Benefit Throat
- Guide Other Herbs Upward
Traditional uses
- Cough with phlegm (wind-cold or wind-heat)
- Sore throat and loss of voice
- Lung abscess with cough producing foul-smelling sputum
- Suppression of lung qi from exterior pathogen
- Used as carrier herb in formulas for upper body
Studied effects and current applications
- Opens and diffuses lung qi to relieve cough
- Expels phlegm from throat and lungs
- Reduces swelling and pain in throat
- Acts as a guiding herb to direct formulas to upper body
- Promotes pus discharge from lung abscesses
Applications under investigation
- Pharyngitis and tonsillitis
- Bronchitis and respiratory infections
- Voice disorders and laryngitis
- Upper respiratory tract infections
- Combined with other herbs for targeted delivery
An effect being investigated does not mean it has been proven in humans.
Contraindications and adverse effects
Absolute contraindications
- Coughing blood from yin deficiency without heat-phlegm
- Antagonizes Longdancao (in classical texts)
Relative contraindications
- Qi reversal upward patterns without phlegm
- Pregnancy
- Generally safe during pregnancy at appropriate doses.
- Breastfeeding
- Safe for nursing mothers.
- Children
- Safe for children and commonly used in pediatric cough and throat formulas.
- Older adults
- Safe for elderly; useful for chronic phlegm and throat conditions.
Possible adverse effects
- Nausea in large doses
- Mild throat irritation possible
When to stop
- Hemoptysis worsens
- Nausea persists
Interactions with medications
| Group | Drugs | Severity | Effect and recommendation |
|---|---|---|---|
| Expectorants | Guaifenesin, Bromhexine | Mild | Additive expectorant effects Generally safe combination |
With other herbs
- licorice Classic combination for sore throat (Jie Geng Gan Cao Tang)
Reference dose
- Decoction
- 3-9 grams daily
- Powder
- 1-2 grams daily
- Acute use
- 1-2 weeks
- Chronic use
- As part of formulas up to 1 month
- Maximum
- Short-term use for acute conditions
- Children
- Safe for children for cough and throat. Popular in pediatric formulas.
Forms of preparation
Simmer 3-9g in 3 cups water 30 min. Gargle and swallow for sore throat.
Sore throat, cough with phlegm
Mix 1-2g powder with honey and warm water. Sip slowly.
Sore throat and dry cough
Approximate doses from the literature; they are not a prescription. Consult a professional.
Active compounds
Triterpene saponins (platicosides) and polyphenols
Oleanolic triterpene saponins · Expectorant, secretolytic, bronchial anti-inflammatory, antimicrobial
Stimulation of bronchial mucosal secretion, inhibition of IL-1β and TNF-α, permeabilization of bacterial membranes · 2-5% in root; pharmacopeial marker ≥0.1% in PD
Triterpene aglycone · Anti-inflammatory, antitumor, lipid modulator
NF-κB inhibition, cell proliferation block, cholesterol absorption reduction · Aglycone fraction of total saponins
Fructooligopolysaccharides · Prebiotic, immunomodulator
Fermentation by bifidobacteria, activation of intestinal immune cells · 10-20%
Phenolic acids · Antioxidant, anti-inflammatory
Radical scavenging, NF-κB inhibition · 0.1-0.5%
Harvesting and processing
- Harvest
- Spring (March-April) or autumn (September-October), 2-3 year old plants
Roots harvested in spring or fall. They are washed, the outer bark is scraped and dried in the sun. The roots of Shandong and Hebei are the most appreciated.
Root cleaned, scraped to remove the outer bark, washed and dried in the sun. Triterpenoid saponins (platycodicins) are the main active ingredients with expectorant action.
Slices mixed with diluted honey and fried. Honey softens the irritation of saponins and enhances the moisturizing action on the Lung.
Formulas it appears in
Health notice. Educational and study content. It describes concepts of Traditional Chinese Medicine and does not replace diagnosis or treatment by a healthcare professional. Needling, medicinal herbs and invasive techniques must be applied by trained professionals. Safety guide.
