Metoclopramide Hydrochloride Injection, commonly known as Gastrofluan Injection, is an antiemetic drug. The clinical effects of this drug mainly include the following aspects: 1. Central action: Metoclopramide Hydrochloride Injection is injected intramuscularly and absorbed by the capillaries of the muscles to enter the body’s circulatory system quickly and then redistributed throughout the body. The drug mainly acts on the vomiting center of the brain, inhibiting the response of the vomiting center and then making the patient vomit less; 2. Peripheral effects: Metoclopramide hydrochloride injection can also promote the dynamics of the gastrointestinal tract, especially the stomach, and increase gastric motility. Patients may vomit if they have abdominal distension, excessive stomach contents and insufficient gastric motility. After using the drug to promote peristalsis of the gastrointestinal tract, the stomach contents can be emptied through the pylorus and discharged into the small intestine, which can also alleviate the symptoms of nausea and vomiting.