The efficacy of boiling water with scallion white is to promote sweating and dispel wind-cold, dispersing cold and promoting Yang.
Onion white belongs to the role of dispersing wind-cold, for the lily plant onion stem root bulb. It is warm and pungent in nature, belonging to the lung and stomach meridian, with the effect of sweating and dispersing cold and Yang.
Onion white pungent temperature is not dry and strong, sweating is not harsh, weak, used for wind-cold cold, cold (fear of cold) fever light evidence. Its pungent dispersal and warmth can promote Yang qi, warm and dissipate cold condensation, which can make Yang qi up and down smoothly, inside and outside the smooth, used for Yin Shengge yang, syncope (unconsciousness, accompanied by cold limbs, or even cold to the elbow and above the knee) pulse micro.
The adverse reactions and contraindications of scallion white are unclear. Boiled water with scallion white is usually used for wind-cold and flu, Yin Sheng Ge Yang, but is often used in combination with other medicines. If there is a need for medication, it is recommended to use it under the guidance of a professional physician, not blindly self-medication.