Actions:

• Releases the exterior and disperses cold: for chills, fever, headache and a heavy sensation in the body.
• Stops damp bi pain: for wind-cold-damp bi pain, especially in the upper parts of the body, including the occiput.
• Guides qi to the greater yang and governing vessels: directs other herbs to regions traversed by these channels.

Contraindications:

• Caution in cases of blood, yin, and exterior deficiency. Overdosage may cause nausea and vomiting.

Dosage:

• 6-15g. Use parts = root or rhizome.