 In addition, many formulations include jie geng - Platycodon root (a phlegm-resolving herb which guides the formula upward), zhi mu - Anemarrhena asphodeloides rhizome (a heat-clearing, fire-reducing herb which soothes and moistens hot, irritated membranes), wu wei zi - schizandra fruit (an astringent herb which restrains excessive secretions), jing jie - Schizonepeta flower and herb (a surface-releasing herb which opens the nasal passages and alleviates itching), lian qiao - forsythia fruit (a heat/toxin-eliminating herb which alleviates redness and swelling), and fang feng - Ledebouriella root (a surface-releasing herb which alleviates head pain and congestion).In 2011, Health Canada issued a recall of one particular brand of Biyan Pian, because of high levels of mercury.The levels were nearly ten times higher than the daily maximum set by Health Canada.