Acanthopanax Root Bark (Wu Jia Pi)

五加皮
Acanthopanax bark (Wujiapi)

Pharmaceutical Name: Cortex Acanthopanacis

Botanical Name: Acanthopanax gracilistylus W. W. Smith

Common Name: Acanthopanax bark

Source of Earliest Record: Shennong Bencao Jing

Part Used: The bark of the root is gathered in summer or autumn and then dried in the sun.

Natural Properties & Taste: Pungent, bitter and warm

Meridians: Liver and kidney

Therapeutic Effects:
1. To dispel wind and dampness.
2. To strengthen the tendons and bones.
3. To benefit urination.

Indications:
1. Wind-damp obstruction syndrome manifested as rheumatic pain and spasm of the limbs. Acanthopanax bark (Wujiapi) is used alone or with Clematis root (Weilingxian), Pubescent angelica root (Duhuo), Mulberry twigs (Sangzhi) and Chaenomeles fruit (Mugua).

2. Deficient liver and kidney manifested as soreness, weakness and pain in the lumbar region and the knees. Acanthopanax bark (Wujiapi) is used with Eucommia bark (Duzhong), Cyathula root (Niuxi), Mulberry mistletoe (Sangjisheng) and Teasel root (Xuduan).

3. Edema. Acanthopanax bark (Wujiapi) is used with Poria peel (Fulingpi) and Areca nut shell (Dafupi) in the formula Wupi Yin.

Dosage: 5-10 g