延胡索为罂粟科植物的干燥块茎,又名玄胡索,其性味辛,苦、温,归肝、心、胃经,具有活血化瘀、行气止痛之功,善治内外诸痛。常用于胸痹心痛、肝胃气痛、痛经、经闭、症瘕腹痛、疝痛、跌打肿痛等证。临床上,医生运用该药时每与其它药物一同煎煮,止痛效果大为降低。药理实验证明,延胡索的各种剂型如:粉剂、醇制浸膏、醋制浸膏、醇制流浸膏、水制流浸膏等均有镇痛作用,其作用高峰皆在半小时内出现,维持时间约2小时,然作用强度以醇制浸膏、粉剂和醋制流浸 Corydalis is a dried tuber of a plant belonging to the family Papaveraceae, also known as Xuan Hu Soo. It is a spicy, bitter, warm, liver, heart, and stomach meridian. It has the functions of promoting blood circulation, removing blood stasis, and relieving pain. Commonly used for chest pain, liver and stomach pain, dysmenorrhea, amenorrhea, abdominal discomfort, abdominal pain, cramps, bruises, etc. In clinical practice, when doctors use the drug to decoct with other drugs, the analgesic effect is greatly reduced. Pharmacological experiments have proved that various formulations of Corydalis include: powders, alcohol extracts, vinegar extracts, alcohol-based liquid extracts, water-based liquid extracts, etc. all have analgesic effects, and their peaks appear within half an hour. , The maintenance time is about 2 hours, but the strength of action is made by alcohol extract, powder and vinegar.