Single Herbs

Category	Xie Xia Yao 瀉下藥
Sub Category	Gong Xia 攻下
Name	Da Huang 大黃 Rhubarb root
Grown	West, south and central China.
Source	The dried rhizome of Rheum palmatum L. and its family.
Ingredients	Chrysophanol, Rheumemodin, Sennoside, Heterodianthrone, Chrysophanein, 2-O-Cinnamoyl-l, 6-di-O-galloyl-?-D-glucoside, Rhatannin
Pharma Effect	1) Laxative effect: oral ingestion of the herbal extract has a laxative effect on small white mice. The extract has no impact on carbon particle transportation in the small intestine, but stimulates the excretion of the particle. Neither has it any effect
Properties	Bitter, cold
Channels	Spleen, stomach, large intestine, heart
Function	Dispels accumulation in stomach and intestines, drains excessive heat in the blood, regulates blood flow, benefits the bone joints, dispels stasis in the abdomen and facilitates urination and defecation.
Clinic Usage	For food stagnation, constipation due to excessive heat, dysenteric disorders, blood stasis, mass in the abdomen, red, painful eyes, edema, jaundice, urinary retention, and swollen, hot and painful skin lesions.
Cautions	Use with caution during pregnancy.
Dosage	3~12g. Do not overcook the herb (not more than 10 minutes) to use as a laxative. Use externally with proper dosage. Apply powder to the wounds.
Storage	Store in a dry, well-ventilated place. Protect from worm infestation.