Rhizoma Atractylois (Cang zhu) is the dried rhizome of Atractylodes lancca (Thunb.) DC. Or A. chinensis (DC.) Koidz. Its extract may be considered as an ingredient in medications for asthma and other allergic conditions. 
 
Atractylois possesses a strong herbal and woody aroma, boasting multifaceted efficacy, and is poised for widespread application in daily chemicals, food, health products, and the pharmaceutical industry.