11/10/2025
Yu ping feng san, or “Jade Windscreen,” has been used in East Asia for over 800 years, with records dating back to the writings of the scholar Zhu Dan Xi in 1347. As its name illustrates, the Jade Windscreen formula supports and enriches the wei qi, or protective qi, in guarding against harmful influences entering the body.
This simple formula incorporates three herbs to support healthy immune function. Astragalus root is neutral and sweet, and it supplements Spleen qi to help promote lung and digestive health. Notable for its water-soluble polysaccharides, flavonoids, and saponins, astragalus has been shown to modulate immune function acutely and is used as adjunctive therapy in many chronic conditions. Atractylodes, which is warm, sweet, and bitter, tonifies Spleen qi and drains dampness. Ledebouriella (siler root) is pungent and sweet, and it releases the exterior to dispel wind, damp, and cold.
Whether you're a consumer looking for ways to stay healthy this season with our delicious Back to School formula (Jade Windscreen plus elderberry, lemon balm & catnip) or you're a practitioner who prefers the traditional Chinese formula, we've got you covered.
Plus, for the rest of November, save 15% off your retail or wholesale orders on our immune support formulas with code LUNG15 at checkout. Be well folks!