Our Cold & Flu Formula is a combination of two very popular formulas: Yin Qiao San and Gan Mao Ling. These are the two most useful formulas for treating colds and flus. Yin Qiao San herbal formula was first published in 1798 by Dr. Wu Ju Tong. It is incredibly effective at helping invasion of wind-heat in Chinese medicine. Wind heat often manifests as common cold or flu symptoms when there is sore throat, fever, and aches. Gan Mao Ling translates to “effective remedy for cold and flu.” This formula treats what is called wind-cold conditions: colds and flus that present with clear runny nasal discharge, watery eyes, stiff neck, and chills. Our Cold & Flu formula is used to try to prevent and reduce symptoms associated with the common cold and flu.