This product belongs to alkaloids. It is a derivative of pyridine. It is one of the main alkaloids in Sophora alopecuroides. It is mostly distributed in leguminous and berberine plants. It has pharmacological effects of anti arrhythmia, anti microbial infection, anti ulcer, increasing leukocyte and so on. Clinically, it is mainly used to rescue surgical trauma, war injury, asphyxiating agents, cyanide agents Treatment of reflex apnea during poisoning caused by anesthetics, failure of respiratory and cardiovascular activities during infectious diseases, shock, collapse state and neonatal asphyxia.