Metoclopramide is a dopamine receptor antagonist that enhances gastrointestinal motility and has antiemetic properties. It is commonly prescribed for chemotherapy-induced nausea and vomiting, gastroparesis, and to facilitate gastric emptying during radiological examinations. Its mechanism of action involves blocking dopamine receptors in the chemoreceptor trigger zone and enhancing the response of the gastrointestinal tract to acetylcholine.
