The root of Achyranthes bidentata BI., family Amaranthaceae.
Root slender-terete, 15-50 cm long, 0.4-1.0 cm in diameter. Surface gery-yellow,
with longitudinal wrinkles, fibrous root scars and lenticels. Prepared
as segments, cross section somewhat corneous, light yellow, with numerous
special vascular bundles dottedly arranged in several concentric rings,
about 2-4 rounds. Bitter and sour in taste, mild in nature, and attributive
to liver and kidney channels.
1. Promote blood circulation to remove blood stasis, dredge the channels
and oxytocic: For dystocia, retention of placenta, and blood stasis syndrome
with amenia, dysmenorrhea, postpartum lochiostasis, abdominal pain, headache,
chest pain or trauma.
2. Ease the joint and strengthen bones, and muscles: For backache, pain
and difficulty in movement of the knees, flaccidity of extremities.
3. Induce the vital energy downward: For hyperactivity of liver-yang with
headache, flaming-up of deficiency-fire with aphthae, toothache, hematemesis,
epistaxis and hemoptysis.
4. Promote diuresis and relieve stranguria: For stranguria caused by urinary
stone, stranguria of heat type and edema.
Inhibiting the progress of experimental arthritis in animals, and antiphlogistic
2. Its decoction or infusion induce contraction of gr~id or ungravid uterus
in experimental animals.
3. Its decoction exerts a transient hypotensive and diuretic effect.
Contraindicated for nocturnal emission, menorrhagia, collapse of middle-jiao
energy and pregnant women. Radix Achyranthis Bidentatae is more effective
for strengthening bones and muscles, and Radix Cyathulae is more effective
for promoting blood circulation and removing blood stasis.