Vinegar Yanhuisuo is a vinegar product of the Chinese medicine Yanhuisuo, which is known for its pain-relieving, qi-moving, and blood-activating properties and effects. The vinegar product helps to enhance the pain-relieving effect of Yanhusuo. Yanhusuo is used as a dry tuber, usually decocted or powdered for internal use. Yanhusuo is pungent, bitter, warm, and can enter the liver and spleen meridians, with the efficacy of relieving pain, promoting qi, and activating blood circulation, and is commonly used in the treatment of pain and swelling, chest paralysis (chest tightness and pain), heart pain, pain in the chest and hypochondrium, epigastric (abdomen), menstrual dysmenorrhea, and postnatal stasis and obstruction of the evidence of other diseases. The adverse effects of Yanhusuo are not clear, and it is contraindicated for those who are allergic to Yanhusuo. Yanhusuo should be used under the guidance of a traditional Chinese medicine practitioner to avoid blind self-medication, so as not to delay the condition.