Cang Er Zi San is a classical formula that is designed for Wind-Cold with interior Heat, profuse nasal discharge due to Wind-Heat Attacks. Indications include nasal discharge and obstruction, intolerance of Cold, bitter taste in mouth. Also marked by a yellow tongue coating and floating and rapid pulse. Treasure of the East® herbal formulas are full-spectrum, pharmaceutical-grade, and extracted with only purified water to replicate a traditional decoction. They are produced by Tianjiang Pharmaceutical, the world's largest producer of herbal granules, in a facility that is fully automated and computer-controlled to ensure quality and consistency. Products are tested extensively in Tianjiang's CNAS National Laboratory, yielding high-precision data regarding each herb's identity, origin, the concentration of effective components, heavy metals, pesticide residues, and proper dosage in concentrated form. Tianjiang's production protocols for concentrated herbal extracts have been internationally recognized and adopted into the pharmaceutical and food standards of the China Food and Drug Administration.