Western Herbalism
Japanese Knotweed
Reynoutria japonica
Root/rhizome primary part used in TCM as Hu Zhang Invasive species - source carefully to avoid contaminants Limited high-quality human clinical trials, mostly in vitro/animal/TCM traditional use Used in Lyme protocols
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Indications what the tradition reached for it in
- Traumatic injury pain
- Gingivitis
- Skin infection
- Cardiovascular support
- Lyme disease
- Respiratory infection
- Blood Stagnation
- Bronchitis
- Burns
- Menstrual pain
- Bartonella
- Joint pain from wind-damp obstruction
- Jaundice
- Poor microcirculation
- Antioxidant protection
- Internal abscesses
- Cough with yellow phlegm
- Gentle laxative for constipation
- Gallstone
- Constipation
- Debility
- Fatigue
- Immunodeficiency
- Infection
- Inflammation
- Recurrent infections
- Viral infections
- Weakness
- Dysmenorrhea
- Wounds
Safety
Pregnancy: Pregnancy Caution
Breastfeeding: Lactation (source flag notSafeInLactation)
The record lists 2 contraindications; open the plate in the library to read them in full.
Dosing as the sources wrote it
| Preparation | As written | Metric |
|---|---|---|
| Tincture | Tincture 1:5 (dry root), 0.5-5 mL (15-90 drops) 2-3x/day | 0.5-5 mL |
| Decoction | Decoction 9-30g root simmered 15-20 min, 3x/day | 9000-30000 mg |
| Tea | Tea 1.5g powder per cup, 3-4 cups/day | 1500 mg |
Doses are reproduced from the sources for practitioners and are not a recommendation for any person.
From the sources
Clinical Notes. Root/rhizome primary part used in TCM as Hu Zhang Invasive species - source carefully to avoid contaminants Limited high-quality human clinical trials, mostly in vitro/animal/TCM traditional use Used in Lyme protocols
primary-actions. Japanese Knotweed acts primarily as: Antimicrobial, Anti-inflammatory, Antioxidant, Blood tonic, Alterative, Hepatic. Secondary actions include Laxative, Cardioprotective, Immunomodulator, Antiviral.
indications. Japanese Knotweed is traditionally indicated for: Traumatic injury pain, Gingivitis, Skin infection, Cardiovascular support, Lyme disease, Respiratory infection, Blood Stagnation, Bronchitis, Burns, Menstrual pain, Bartonella, Joint pain from wind-damp obstruction, Jaundice, Poor microcirculation, Antioxidant protection, and 21 further conditions.
constituents. Notable constituents of Japanese Knotweed include: Anthraquinones (emodin, rhein, physcion), Stilbenes (resveratrol, polydatin), Flavonoids (quercetin, rutin, kaempferol.
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