Pharmaceutical Latin: Rhizoma Polygoni Cuspidati
Common English: Bushy Knotweed Rhizome
Giant Knotweed
Japanese Knotweed Root
Polygoni Cuspidatum
Herbs that Regulate Blood: Herbs that Invigorate Blood
Taste Temperature Entering Meridians Dosage
(Slightly Acrid)
Tincture: 2-4ml
Actions Indications/Syndromes

Invigorates the Blood, dispels Blood Stasis, unblocks the channels and stops pain

Amenorrhea due to Blood Stasis

Wind-Damp Bi

Traumatic injury

Clears Heat and resolves Dampness

Damp-Heat jaundice

Turbid vaginal discharge

Turbid, painful urinary dysfunction

Discharges toxins and disperses swelling

Toxic skin conditions, burns and carbuncles

Drains Heat, transforms Phlegm and stops cough

Lung Heat cough

Constipation due to clumping of Heat

  • Contraindicated during pregnancy.
  • Combine with tonics to avoid harm.
  • Reported side effects are: dry mouth, bitter taste in the mouth, nausea, vomiting, abdominal pain, and diarrhea.
  • Use caution for those taking insulin, sulfonylureas and other antidiabetics such as tolbutamide (Orinase), glipizide (Glucotrol) and glyburide (DiaBeta/Micronase) as there may be a synergistic effect leading to hypoglycemia.

Hb. Leonuri
Yi Mu Cao
Rx. Salviae Miltiorrhizae
Dan Shen
Rx. Rubiae)
Qian Cao Gen)

Caulis Spatholobi
Ji Xue Teng
Cacumen Tamaricis
Xi He Liu


Rx. Angelicae Sinensis
Dang Gui
Flos Carthami
Hong Hua


Menstrual pain from Blood Stasis

Bi Pain

Trauma pain

Hb. Artemisiae Scopariae
Yin Chen Hao
Hb. Lysimachiae
Jin Qian Cao


Hb. Artemisiae Scopariae
Yin Chen Hao
Fr. Gardeniae
Zhi Zi
Rx. et Rz. Rhei
Da Huang

Sm. Coicis
Yi Yi Ren
Rz. Dioscoreae Hypoglaucae
Bei Xie

Rx. Aucklandiae
Mu Xiang
Fr. Aurantii
Zhi Ke

Damp-Heat jaundice

Turbid Damp vaginal discharge

Biliary or urinary tract stones

Hb. Lysimachiae
Jin Qian Cao

Flos Lonicerae
Jin Yin Hua
Fr. Forsythiae
Lian Qiao

Sesame Oil

Biliary or urinary tract stones

Resolves toxicity

With fresh Hu Zhang topically for burns

Rx. Scutellariae
Huang Qin
Flos Lonicerae
Jin Yin Hua
Fol. Eriobotryae
Pa Ye

Ru Xiang
Mo Yao
Flos Carthami
Hong Hua

Rx. Curcumae
Yu Jin
Endothelium Corneum Gigeriae Galli
Ji Nei Jin
Hb. Lygodii
Hai Jin Sha
Hb. Lysimachiae
Jin Qian Cao
Fr. Toosendan
Chuan Lian Zi
Rz. Corydalis
Yan Hu Suo

Lung Heat cough

Sports and traumatic injuries


Flos Lonicerae
Jin Yin Hua
Fr. Forsythiae
Lian Qiao

Hb. Taraxaci
Pu Gong Ying


Abscesses of the Internal organs

Snakebite (as a topical paste)



  1. Some sources consider this to be a “Damp-Heat Clearing” herb.
  2. This herb invigorates the Blood, breaks up Stasis, expels Wind, eliminates Dampness, cools Heat, resolves toxicity, transforms Phlegm and stops cough.
  3. It attacks all toxic Swellings, stops sore throat, facilitates urination and travels through all the channels and collaterals.
  4. Used in conjunction with tonic herbs, it is an important herb for painful urinary dysfunction in older people with Qi and Blood Deficiency.
  5. The fresh herb, ground and applied topically can be used for burns, sores, hemorrhoids, and other skin infections.
  6. Wine-fried Bushy Knotweed Rhizome Jiu Chao Hu Zhang more strongly invigorates Blood and soothe sinews and is less likely to irritate digestion.
  7. One source says that this herb tonifies the muscles and bones and increases strength.
  8. This herb has been shown to inhibit the growth of cancer cells.
  9. One source says that this herb is usually indicated for abdominal masses and regulating menstruation.
  10. Another source says that this herb is effective for joint diseases and Blood Stagnation.
  11. For abdominal masses, tinnitus, heaviness of the limbs, irregular menstruation and impotence, mix this herb with 600g of Sm. Dolichorus Bai Bian Dou and 200ml of old wine and decoct with 2000ml of water. Take 5ml each time.
  12. One source says that washing ones hands and feet with this herb cure swelling and pain of the hands and feet.