Moistens Lungs, Descends Qi, Stops Cough, and Transforms Phlegm For cough and wheeze due to Cold, Heat or Yin Deficiency and chronic cough with blood streaked sputum. Chinese Herb Contraindications Cautions Use with caution for cough due to heat Use with caution in cases with lung abscesses or pus and blood in the sputum information from sacredlotus please consider petitioner before using this product this message yet approved by fda