The full name of Dan Shen Drops is Compound Dan Shen Drops, and its main ingredients are Dan Shen, Panax notoginseng and Bing Shen. It has the function of activating blood circulation and resolving blood stasis, regulating qi and relieving pain. It is mainly used for chest paralysis caused by Qi stagnation and blood stasis. The drug has a wide safety window, good safety for long-term use, serious adverse reactions are rare, common adverse reactions are as follows: 1, digestive system: after taking the drug there will be mild stomach pain, nausea, belching, acid reflux, erratic, abdominal distension, abdominal pain and dyspepsia, etc., of which stomach pain, nausea belching is more common; 2, the nervous system: individual after taking the drug there will be facial flushing, occasional head swelling, short duration, dry mouth, sweating, etc., does not affect the continuous use of the drug; there are also cases of continuous use of the drug. 3. Allergic reactions: Occasional allergic reactions such as skin rash, the incidence of which is low; if patients experience nausea, belching, acid reflux and other stomach discomfort after taking the drug, it is recommended to take the drug sublingually or 30min after meals.