Rhizoma Cimicifugae
Source
Rhizome of Cimicifuga heracleifolia Kom., C. dahurica (Turcz.) Maxim.
and 
C.
foetida L., family Ranunculaceae.
Characteristics
Rhizome growing horizontally, irregular and nodular, bearing numerous
broad round hollowed stem base traces at the upper part, radial grooves
on the basal wall, and fibrous roots at the lower part. Acrid and sweet
in taste, slightly cold in nature, and attributive to lung, spleen, large
intestine and stomach channels.
Indication
1. Expel wind and heat, clear away toxic materials and let out skin eruption:
For common cold of wind-heat type, and measles with indistinct eruptions,
usually used together with Radjy Puerariae.
2. Lift up yang energy: For visceroptosis, used together with Radix 
Astragali
seu Hedysari, and Radix Codonopsis Ptlosulae.
3. Clear away heat and expel fire: For toothache due to stomach-heat,
aphthae and headache, used together with Gypsum Fibrosum and Rhizoma Coptidis.
Pharmacological
Action
1. Antipyretic, analgesic and anti-inflammatory. Gastric infusion of its
extract (mainly containing ferulic acid) in a dosage of 1.0g/kg can lower
the body temperature of normal rats, and relieve the pain elicited by
acetic acid in mice.
2. Inhibiting myocardium, slowing heart rate and lowering blood pressure.
Administration Decoction: 3-6g.