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Common name: |
Japanese Knotweed |
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Family: |
Polygonaceae |
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Parts used: |
Rhizome, root |
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Chemistry: |
Resveratrol, trans-resveratrol, emodin, emodin monomethyl ether, polydatin (piceid), piceatannol, physcion, astringin, oxalic acid, rheic acid, barium, bromine, catechin, chrysophanol, itreosein, dimethylhyroxychromone, fallacinol, glucofragulin, isoquercitrin, manganese, methylcoumarin napthoquinone, physide, piceid, plastoquinone, polydatoside, polygonin, protocatechuic acid, quercitrin, questin, questinol, reynoutriin, rheic acid, rubidium, rutin, and numerous minerals, flavonoids, polysaccharides, and tannins. |
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Main actions: |
Antibacterial, antiviral (HBV & HIV), antischistosomal, antispirochetal, antifungal, immunostimulant, immunomodulant, anti-inflammatory |
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Other Actions: |
Antoxidant, antiatherosclerotic, antihyperlipidemic, antimutagenic, anticarcinogenic, antineoplastic, CNS protectant, neuroprotective, vasodilator, inhibitor of platelet aggregation, eicosanoid synthesis suppressant, antithrombotic, tyrosine kinase inhibitor (TNF-alpha), oncogene inhibitor, antipyretic, cardioprotective, mildly analgesic, antiulcer, antitumor, hemostatic and astringent |
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TCM (Hu zhang) |
Invigorates the qi and qi, stops pain Clears heat, resolves toxins Transforms phlegm, stops cough |
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Traditional uses |
Arthritis, traumatic injury, jaundice, urinary disorders, constipation, menstrual disorders, kidney stones, burns, haemorrhoids, carbuncles, skin infections, snakebites, dental caries |
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Dosage: |
Tincture: 1-3ml TID |
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Safety:
Research |
Contraindicated in pregnancy Can cause digestive complaints in high doses.
A Review of the Pharmacological Effects of the Dried Root of Polygonum cuspidatum (Hu Zhang) and Its ConstituentsEvidence-Based Complementary and Alternative Medicine Volume 2013 (2013), Article ID 208349, 13 pages |