Medicinals
dú huó / 独活 / 獨活 / pubescent angelica;
Latin pharmacognostic name: Angelicae Pubescentis Radix
Alternate English names: tuhuo [angelica root]
Alternate Chinese names:
Origin: Plant
Use: medicinal
Category: Wind-damp–dispelling agents / Wind-cold-damp–dispelling agents
Properties: Bitter, acrid; slightly warm.
Channel entry: liver and bladder channels.
Indications:
- Dispels wind-damp and relieves impediment pain: Wind-damp impediment pain.
- Resolves the exterior: External contraction of wind-cold complicated by dampness in the exterior.
- Additional uses: Dú huó is used to treat
lesser yīn headache as well as damp, itchy skin. For itching, it may be taken internally or used externally as a wash.
Dosage & Method:
Oral: 5–15g in decoctions.
Warning:
Dú huó is warm, acrid, drying, and dispersing. It is contraindicated in yīn vacuity heat or blood vacuity impediment (impediment characterized by numbness and tingling of the skin and blood vacuity signs).
Product Description:
Its dried root is spindle-shaped, 15–20 cm long and 0.6–3 cm thick. At the heat is a scar left by the stem. The exterior surface is a yellow brown, with irregular wrinkles, and sparse lenticels located on tumorous protuberances. It easily snaps to reveal a pale yellowish-brown interior. The decocting pieces are transverse slices 1.5 mm thick. On their cut edge are clear annular markings.
Product Area:
Sìchuān, Gānsū.
Etymology:
The name dú huó独活 is composed of dú 独, which means single or independent, and huó 活, which means life or movement. The name reflects the fact that this is a single-stemmed plant that does not bob in the wind.