Gui Zhi Tang / 桂枝汤

Action: 
Expels external wind cold, harmonizes Ying (nutrient Qi) and Wei (defensive Qi)

Indication: 
External wind cold attacks and Wei Qi (defensive Qi) deficiency

Key Symptoms and Signs for Use:
External patterns with fever, sweating, and susceptibility to wind.
Spontaneous perspiration and weak pulse after influenza or other chronic problems. 

Clinical Application for Reference:
Common cold
Eczema
Urticaria
Hay fever
Asthma