Through inhalation, the Lung is the organ of “first contact” with the exterior. It is the commander of wei qi, located directly under the skin. When the lungs are attacked by external influences, the wei qi is weakened allowing pathogens to enter the body ~ symptoms include allergies, asthma, eczema, frequent colds and sinus infections.
Yu Ping Feng San (Jade Screen) helps to boost immunity and is a wonderful allergy formula because it strengthens the wei qi.