Introduction of Hong Qi:Sweetvetch Root or Radix Hedysari.

TCM Herbalism:Medicinals and Classifications. ✵The TCM herbalism is also known as pharmaceutics of Traditional Chinese Medicine, or Chinese pharmaceutics, is the branch of health science dealing with the preparation, dispensing, and proper utilization of Chinese herbs. It is majorly composed of Introduction of Chinese Medicinals, Classification of Chinese Herbs, Formulas, and Patent medicines.

Classifications of Herbs:Qi Tonics,Herbs for Replenishing Qi.

 TCM Herbs Icon14 Introduction: Qi Tonics,herbs for replenishing Qi: also known as Qi-tonifying herbs, an agent or substance that tonifies Qi, used in treating Qi deficiency.

 
Radix Hedysari(Sweetvetch Root).

Radix Hedysari Pin Yin Name: Hónɡ Qí.
 English Name: Sweetvetch Root, Manyinflorescaned sweetvetch root.
 Latin Name: Radix Hedysari.
 Property and flavor: warm or nature, pungent, sweet.

 Brief introduction: The herb Radix Hedysari is the dried root of Hedysarum polybotrys Hand.-Mazz.(family Leguminosae), used as a substitute for Radix Astragali, Milkvetch Root. The herb is commonly known as Radix Hedysari, Sweetvetch Root, Hónɡ Qí.

 Botanical source: Common official herbal classics and other famous herbal classics defined the herb Radix Hedysari(Sweetvetch Root) as the dried root of the species (1).Hedysarum polybotrys Hand.-Mazz. It is a plant of the Hedysarum Linn. Genus, the Leguminosae family of the Rosales order. This commonly used species is introduced as:

 Hedysarum polybotrys Hand.-Mazz. (1).Hedysarum polybotrys Hand.-Mazz.:
 Botanical description: It is commonly known as Duō Xù Yán Huáng Qí, or Hónɡ Qí. Perennial herbs, 100~120 cm tall. Root is straight, thick, long, thick about 1~2 cm, the skin is dark red-brown. Stems are erect, tufted, much-branched; Branches are hard, glabrous, slightly tortuous. Leaves are 5~9 cm long; Stipules are lanceolate, tan dry membranous, connate uppermost; Petiole is usually absent; 11~19 leaflets, shortly stipitate ca. 1 mm long; Leaf blade is ovate-lanceolate or ovate-oblong, 18~24 mm long, 4~6 mm wide, apex rounded or obtuse, usually pointed, base cuneate, glabrous at upper part, appressed pilose at lower part.

 Hedysarum polybotrys Hand.-Mazz. Racemes axillary, usually no higher than leaves; Flowers are numerous, 12~14 mm long, with filiform pedicels 3~4 mm long; Bracts are subulate lanceolate, equal to or slightly shorter than pedicels, pilose, often caducous; Calyx is oblique broad bell-shaped, 4~5 mm long, pubescent, calyx teeth are triangular subulate, teeth between a wide concave, upper calyx teeth about 1 mm long, lower calyx teeth are as long as the upper calyx teeth 1 times; Corolla is pale yellow, 11~12 mm long, flag oblong-ovate, apex rounded, slightly concave, wing linear, equal to or slightly longer than flag, keel longer than flag 2~3 mm; Ovary linear, pubescent. Pod 2~4 segments, pubescent, node pod suborbicular or broadly ovate, 3~5 mm wide, concave on both sides, with distinct reticulations and narrow wings. Its flowering period is from July to August, fruiting from August to September.

 Ecological environment: the plant grows on rocky mountain slopes, thickets, and forest margins. It distributes in Gansu(liupan mountain and southern mountain), and northwest of Sichuan, and other areas of China.

 Hedysarum polybotrys Hand.-Mazz. Characters of herbs: The herb is cylindrical, rarely branched, slightly thick at the upper end, 10~50 cm long, 0.6~2 cm in diameter. The surface is reddish-brown, with longitudinal wrinkles, transversely long skin holes and a few root marks, the skin is easy to fall off, flaky yellow. Hard and tough, not easy to break, the cross-section is fibrous, and show powder, yellow and white skin, wood core is light yellow-brown, ray radial, cambium ring light brown. Light smell, taste light sweet, chewing with a beanstalk taste.

 Pharmacological actions: ①.Effect on immune function: Radix Hedysari has a significant immunomodulatory effect, and its effective ingredient is Radix hedysari polysaccharide, which can enhance the phagocytosis ability of macrophages. ②.Anti-aging effect; ③.Effects on the heart: water extract of the herb Radix Hedysari can significantly reduce myocardial contractility, slow down the heart rate and enhance hypoxia tolerance. ④.Effect on experimental respiratory distress syndrome: improve lung oxygen absorption function, protect alveolar epithelial cells and capillary endothelial cells, reduce capillary permeability, reduce pulmonary interstitial edema, etc. ⑤.Enhance hypoxia tolerance: Radix hedysari can significantly enhance the body's hypoxia tolerance. ⑥.Sedative, analgesic, and anti-inflammatory effects; ⑦.Resistance to pathogenic microorganisms: Radix hedysari has a certain resistance to pathogenic microorganisms, and its antibacterial effect is stronger than Astragalus membranacus. ⑧.Other effects: Radix hedysari also has the function of promoting digestion, increasing hemoglobin content, inhibiting Ehrlich's ascites carcinoma, inhibiting liver cancer, etc.

 Medicinal efficacy: Tonifying Qi and elevating Yang, strengthening exterior and reducing sweat, tonifying Qi and prompt diuresis, prompt diuresis and reduce swelling, promote the secretion of saliva or body fluid and nourishing blood, free stagnation and obstruction, pusdraining and toxin-expelling, healing sore and  promoting granulation(promote tissue regeneration). It is indicated for deficiency of Qi and feeble(Qi deficiency, weak or lacking in strength), poor appetite and loose stool, sinking of Qi of the middle energizer, chronic diarrhea and archoptosis(prolapse of rectum due to chronic diarrhea), hemafecia(hematochezia, passing blood in one's stool), metrorrhagia and metrostaxis, exterior deficiency and spontaneous sweating, Qi deficiency edema, Qi deficiency and puffiness, endogenous heat and wasting thirst(internal heat, consumptive thirst), blood deficiency and sallow complexion(blood deficiency, looks yellowing), hemiplegia(paralysis of half of one's body), numbness and pain, carbuncle-abscess difficult to break or ruptured carbuncle resistant to healing, etc.

 Administration of Radix Hedysari(Hónɡ Qí): 
 
Reference: Administration Guide of Radix Hedysari(Hónɡ Qí)
TCM Books: Internally:9~30 grams(CP), Internally:water decoction,9~30 grams;to invigorate Qi and replenish the middle, better use honey fry prepared herb.(CHMM).

 
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References:
  • 1.Introduction of Hong Qi:Sweetvetch Root or Radix Hedysari.
  • 2.TCM Books:DCTM(Dictionary of the Chinese Traditional Medicine),CHMM(Chinese Herbal Materia Medica).

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