Hansen Simotang Oral Liquid is the exclusive patent product of Hansen Pharmaceutical. Simotang oral liquid originated from the secret recipe "Simotang" contained in the ancient prescription "Pojin Lu Jing" in Ming Dynasty. This product has obvious curative effect on constipation, abdominal distension, abdominal pain and dyspepsia caused by insufficient gastrointestinal motility. It is the first choice drug to enhance the gastrointestinal function of infants and promote the recovery of intestinal function after postpartum and abdominal surgery, and it is also the only compound gastrointestinal motility drug on the market at present.