Pharmaceutical Latin: Rhizoma Imperatae
Common English: Imperata Rhizome
Woolly Grass Rhizome
White Grass
Lalang Grass Rhizome
Cogongrass Rhizome
Herbs that Regulate Blood: Herbs that Stop Bleeding (Hemostatics)
Taste Temperature Entering Meridians Dosage
Small Intestine
Up to 60g if used alone or fresh
Tincture: 2-5ml
Actions Indications/Syndromes

Cools the Blood and stops bleeding

Bleeding due to Blood Heat with epistaxis, hematemesis, hemoptysis and hematuria

Clears Heat and promotes urination

Lin Syndrome

Heat patterns with edema and urinary difficulty

Clears Heat from the Stomach and Lungs

Stomach Heat with nausea and thirst

Lung Heat with wheezing

  • Use with caution for those with Cold from Spleen Deficiency.
  • Contraindicated for those with vomiting due to Cold in the Middle Jiao.
  • Concurrent use with diuretics such as chlorothiazide, hydrochlorothiazide, furmoside (Lasix), bumetinide (Bumex) and torsemide (Demadex) may lead to increased elimination of water and/or electrolytes.

Nodus Nelumbinis Rhizomatis
Ou Jie
Hb. Cirsii
Xiao Ji

Rx. Rehmanniae
Sheng Di Huang

Fu Ling

Fol. Pyrrosiae
Shi Wei

Epistaxis, hematuria and hemoptysis due to Heat. (most effective if the fresh juice is used)

Hematuria due to Heat, even with significant underlying Deficiency.

Hesitating urination.

Hb. Artemisiae Scopariae
Yin Chen Hao
Fr. Gardeniae
Zhi Zi

Sm. Phaseoli
Chi Xiao Dou


Rx. Astragali
Huang Qi

Jaundice due to Damp-Heat.

Edema due to Deficiency.

Jaundice and edema due to Damp-Heat.

Qi Deficiency edema.

Rz. Phragmitis
Lu Gen

Rx. Puerariae
Ge Gen

Gypsum Fibrosum
Shi Gao

Warm febrile disease with thirst and irritability. (can be used as a stand-alone pair or as the basis of a small prescription)

Nausea and vomiting due to Stomach Heat.

Warm febrile disease with nausea and vomiting.

Later stage of a Warm febrile disease with remnants of fever, thirst and dark urine.

Persistent fever from a Warm pathogen disease.

Excessive Heat in the summertime with thirst, irritability and darkish urine.

Rx. Rehmanniae
Sheng Di Huang

Sm. Plantaginis
Che Qian Zi

Nodus Nelumbinis Rhizomatis
Ou Jie

Cools the Blood, draws out toxicity and reduces searing Heat for Ying Stage Heat with fever, thirst, a scarlet tongue and rashes.

Bleeding due to Heat in the Blood.

Heat injuring the Yin.

Prolonged low grade fever.

Unblocks Lin, cools the Blood and stops bleeding for Damp-Heat having clumped to cause scanty urination with pain and hematuria.

Edema in the lower limbs due to accumulation of water and Dampness.

Bleeding in the upper body such as epistaxis and hemoptysis and bleeding in the lower body such as hematuria and Bloody Lin.

Rx. Dipsaci
Xu Duan
Hb. Taxilli
Sang Ji Sheng

Fol. Pyrrosiae
Shi Wei

Caul. Akebiae
Mu Tong

Cx. Mori
Sang Bai Pi

Chronic presence of red blood cells in the urine with backache.


Asthma and wheezing from Lung Heat.

  1. Flos Imperatae Cylindricae Mao Hua is sweet, cold, and also cools the Blood to stop bleeding. It is primarily used for Blood Heat with epistaxis, hemoptysis and hematemesis. It is less effective for Lin Syndrome. It can be used internally and topically.
  2. This herb is especially used for bleeding in the upper body especially epistaxis and hemoptysis.
  3. This herb clears latent, lurking Heat from the Lungs, Stomach, Small Intestine and Bladder.
  4. It is used for to eliminate Blood Heat without causing Dryness.
  5. It is especially noted for treating hematuria.
  6. It can be used alone for hematuria due to Bladder Heat.
  7. It is used to treat cancer.
  8. It can be used alone for edema and decreased volume of urine.
  9. Both Bai Mao Gen and Rz. Phragmitis Lu Gen clear Heat, generate fluids and promote urination. Lu Gen focuses on the Lungs and Stomach and excels at clearing Qi level Heat. It cools the Lungs, drains the Stomach, guides out Phlegm-Heat and vents and disseminates external pathogens. It treats cough from Lung Heat externally contracted disorders and failure of measles to express. Bai Mao Gen is better for clearing Blood level Heat and cooling the Blood to stop bleeding. It focuses on the Heart, Lungs Stomach and Bladder and guides Heart Fire out through the urine. It treats epistaxis, hemoptysis, hematuria and jaundice due to Damp-Heat. The herbs are very close to each other and can substitute for each other if necessary.
  10. It treats toothache, gingival swelling, ulcerative gingivitis, sore of the mouth and tongue, asphyxia due to Lung Heat Stagnation and sores and pus in the throat.
  11. Fresh Imperata Xian Mao Gen is stronger than the dried herb at cooling Heat, generating fluids, cooling the Blood and stopping bleeding. It can be used for any type of bleeding from the Lungs, Stomach or Bladder.
  12. Imperata Juice Bai Mao Gen Zhi alone treats epistaxis due to Heat.
  13. Charred Imperata Mao Gen Tan is better at stopping but not as good at clearing Heat.
  14. Imperata Flower Mao Gen Hua cools Heat in the Blood, and stops bleeding. It is used for Blood Heat patterns with bleeding from the upper body such as epistaxis and hemoptysis or hematemesis. It is taken internally or applied topically.
  15. For regurgitation and vomiting, use 60g of this herb plus 60g Rz. Phragmitis Lu Gen in decoction.