Bai Mao Gen - Imperata cylindrica

Professional Data
 Pin Yin
Bai Mao Gen
Rhizoma Imperatae
 Introduction Back to Top
Rhizoma Imperatae is the dried rootstalk of Imperata cylindrica Beauv. Var. major (Nees) C. E. Hubb (Fam. Gramineae).

 Western medical Back to Top
This herb is indicated in the treatment of jaundice, edema, acute nephritis, etc..

 Eastern medical Back to Top
  • Pattern: Cools Blood, stops bleeding, clears Heat, generates Fluid.
  • Properties: Sweet, cold.
  • Channels entered: Lung, Stomach and Bladder.
 Chemical constituents Back to Top
bai mao gen contains sylvite, citric acid, oxalic acid, malic acid, arundoin and cylindrin, etc..

 Pharmacological actions Back to Top
Hemostasia effect

bai mao gen could promote the formation of thrombogen, shorten bleeding and coagulation time.

Lowering vascular permeability

Water immersion fluid of bai mao gen could lower vascular permeability.

Diuretic effect

Water immersion fluid and decoction of bai mao gen had diuretic effect on rabbits.

Antibacterial effect

Decoction of bai mao gen had significant inhibitory effect on Shigella flexneri and Shigella sonnei.

 Clinical Studies Back to Top

bai mao gen could be used to treat nasal bleeding, haematemesis, hematuria and uterine bleeding. It had good effects on skin or mucous petechiae, nasal or gingival bleeding and bleeding in sputum.

Acute glomerulonephritis, acute edema

bai mao gen 250~500g was decocted with 500~1000ml water for 10 minutes with slow fire after boiling. It had good short-term effect on acute glomerulonephritis.

Acute or chronic infectious hepatitis

bai mao gen decoction was used to treat 200 cases of acute or chronic infectious hepatitis and had satisfactory effect. 33 cases of acute or chronic infectious hepatitis were treated with bai mao gen, xuan shen, dang gui, ren dong teng, sheng gan cao, sheng huang qi, sheng ma, tu fu ling, 25 cases were markedly effective, 6 effective, and the total effective rate was 94%.

Upper respiratory tract infections

Qing Wen Tang No. 1 (bai mao gen, da qing ye, sang ye, lu gen, sheng shi gao, gan cao) was used to treat 40 cases of upper respiratory tract infections. It had good effects on fever, cough, nasal discharge, poor appetite, thirst, scanty and yellow urine and dry stools. 85% cases had fever allayed within 2 days.

 References Back to Top

Except those noted, all references come from Weng Weiliang, et al., Clinical Chinese materia medica, Henan Science & Technology Press, 1998