CANG ZHU 苍术

CANG ZHU 苍术

Atractylodis Rhizoma (苍术) is the dried rhizome of Atractylodes lancea (Thunb.) DC. or A. chinensis (DC.) Koidz. , family Asteraceae (Compositae).

Other name 
Kot-Ka-Mao (Thai name), Cangzhu (Chinese name), Atractylodes Rhizome

Macroscopic character

Maocangzhu (A. lancea) : Irregularly moniliform, somewhat curved, occasionally branched. External greyish-brown. Texture compact, fracture scattered with many orange-yellow or brownish-red oil cavities and crystallized out as white fine needle crystals. Odor, characteristic; taste, slightlysweet, pungent and bitter.

Beicangzhu (A. chinensis) : Nodular-cylindrical. External blackish-brown. Texture loose, fracture scattered with yellowish-brown oil cavities. Odor, slightly aromatic; taste, pungent and bitter.

 
Important cultivation area
Jiangxu, Hubei, Henan, Zhejiang provinces.

Processing method
1. Cangzhupian :
Eliminate foreign matters, wash clean, soak in water until thoroughly soften, cut into thick slices, and dry.

2. Fuchaocangzhu :
Stir-bake wheat bran on a medium fire until smoke (use 10 kg of wheat bran for 100 kg of Cangzhupian), then stir-bake until the color turns dark, sift out wheat bran.

Traditional Chinese Medicine action
Pungent, bitter; warm. Enter spleen, stomach and liver channels.

1. Cangzhupian : Dry dampness to fortify the spleen, dispel wind
and dissipate cold, improve vision.


2. Fuchaocangzhu : Stir-bake with wheat bran reduces pungent, moderate dryness, more aromatic and more potent to fortify spleen and stomach.


Thai Traditional Medicine action
Odor, aromatic; hot. Norish Dhatu, enhance appetite, relieve sore in mouth and throat, dyspnea, cold, nasal decongestant, fever, sweating, migraine and promote urination.

Usage and dosage 
5-10 g, decoction for oral use.


* Contraindication and precaution *
Contraindicated in yin deficiency patient with interior heat and qi deficiency patient with profuse sweating.


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