The use, function and formula of Radix et Rhizoma Rhei (There are many professional CTM words, if you can't understnad, plese list behaid)

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Radix et Rhizoma Rhei
Source The root and rhizome of Rheum Palmatum L., R. tanguticum Maxim.
Ex Balf or officinale Baill., family Polygonaceae.
Characteristics Crude drug nearly terete, conical or lecotropal, 5-15
cm long, 2-8 cm in diameter; surface yellow-brown, sometimes with
residual cork. Prepared as transversely cut pieces, The section of
Rhizome showing narrow cortex and wood, broad pith with alternating
yellow-brown and red-brown striae and numerous peculiar vascular
bundles in asteriate annular arrangement or scattered; the section of
the root showeing developed xylem, radially arranged vascular bundles
and visible annular marks. Delicately aromatic in odour. Bitter in
taste, cold in nature, and attributive to spleen, stomach, large
intestine, liver and pericardium channels.
Indication 1. Promote digestion and relieve dyspepsia, purge heat and
clear away toxic materials: (1) for constipation of sthenia-heat type
with coma, delirium, convulsion,mania or abdominal distension and
pain, usually used together with Natrii Sulfas, Fructus Aurantii
Immaturus, Cortex Magnoliae Officinalis,(Decoction for Potent
Purgation); (2) For syndrome resulting from evils accumulating in the
thorax with abdominal distension and pain, tenderness, dry tongue and
thirst, hectic fever, or shortness of breath and restlessness, used
together with Radix Euphorbiae Kansui, Natrii Sulfas (Decoction for
Severe Phlegm Heat Syndrome in the Chest); (3) for acute appendicitis,
usually used together with Cortex Moutan Radicis, Semen Persicae;(4)
for dysentery of dampness-heat type with abdominal pain and tenesmus,
used together with Fructus Aurantii Immaturus, Rhizoma Coptidis, etc;
(5) Single use for biliary infection, cholelithiasis and pancreatitis;
for biliary ascariasis used with Herba Artemisiae Scopariae together;
(6) for acute and simple intestinal obstruction, roundworm intestinal
obstruction and paralytic intestinal obstruction, Decoction for Potent
purgation may be used; （7）for food and drug poisoning; (8) for
pulmonary heart disease with respiratiry failure and constipation; (9)
for uremia, decoction as enema may be used; (10) for cold-syndrome
with constipation, used together with Radix Aconiti Praeparata,
Rhizoma Zingiberis, etc
2. Clear away heat and toxic materials: Oral and external use for
furuncle and carbuncle due to intense heat; topical use for burn of
medium or small size, cervical erosion and mycotic vaginitis; for
furunclosis complicated by septicemia, used together with Flos
Lonicerae, Fructus Forsythiae, etc.; also for sorethroat, conjunctival
congestion, aphthae and toothache due to domination of fire.
3. Stop bleeding: For peptic ulcer with bleeding, also for hemoptysis
and epistaxis due to blood stasis, blood-heat or domination of fire;
external use for traumatic bleeding.
4. Promote blood circulation and remove blood statis: for trauma,
especially those of the chest and abdomen with constipation; amenia,
dysmenorrhea and postpartum abdominal pain due to blood stasis.
5. Chologigue and relieve jaundice: For preventing and treating
icterus neonatorum(including ABO type hemolytic jaundice of new born),
used together with Herba Artemisiae Scopariae, Radix Scutellariae,
Radix Glycyrrhizae; for icteric viral jaundice, and acute and serious
case of hepatitis.
Pharmacological Action
1. Sennoside A is the component for purgation
2. Promoting biliary secretion and enhancing the amount of bilirubin
and bile acid.
3. Rhein and Emodin exert bacteriostatic effect by inhibiting the
synthesis of DNA, RNA and protein in bacteria.
4. Emodin is a component for hypotensive
5. Oral use of its extract reduces the ratio of serum cholesterol and
total phospholipid in rabbits with hyperchlolesterolemia.
6. Chrysophanol, an other active component, exerts a hemostatic effect
Administration Decoction: 3-12g. Powder: 2-5g, Daily dose 4-10g. For
purgation, decoct later(only boil for 15 minuters) or soak in the
boiled water for oral use.