Properties:
Acrid
Warm
Bitter
Aromatic

Channels affected:
Kidney
Bladder

Uses:
Releases the exterior and disperses Cold. Used for exterior Cold with chills, fever, head and body aches. Alleviates Pain due to Wind Cold and Damp, used in Bi syndrome of this type, especially when the Du and Tai Yang Mai are affected.

Contraindications/precautions:
Contraindicated in deficient Yin, Blood and deficiency exterior patterns.