The scientific name of 654-2 is scopolamine, which is mainly used to treat smooth muscle spasm and stomach cramps. 654-2 is used to treat vertigo, mainly for nausea, discomfort and other symptoms of the digestive tract brought on by vertigo. Attacks of vertigo are accompanied by rotation of vision, and severe autonomic symptoms such as nausea and vomiting may occur. The vomiting may be frequent and the vomit may be stomach contents or digestive juices. Therefore, when vomiting is obvious, symptomatic treatment such as gastric preservation and antiemetic treatment can be given, and 654-2 can be used. in addition to gastric preservation treatment, anti-vertigo treatment should be actively administered, such as oral flunarizine capsules, and if the symptoms are not relieved significantly, intramuscular injection of promethazine can be given. At the same time, bed rest, avoid strenuous activities, and eat more easily digestible liquid or semi-liquid food.