Motilium: Efficacy and Mechanism of Action
Jun 30, 2021
Source: Cainiu Health
Dr. Lu Chaohui
Introduction
1. Enhances gastric motility, as domperidone promotes gastric peristalsis and shortens postprandial gastric emptying time, while also facilitating relaxation of the pylorus.
2. Promotes gastric peristalsis, as domperidone is a commonly used clinical drug for treating gastrointestinal disorders.
3. Enhances postpartum lactation, as domperidone elevates serum prolactin levels in women, thereby exerting a certain stimulatory effect on postpartum milk production.
Domperidone is highly effective in treating nausea and vomiting caused by functional, organic, infectious, dietary, radiation therapy– or chemotherapy–related conditions. It is also indicated for heartburn—with or without gastroesophageal reflux—and is primarily used to manage dyspepsia resulting from delayed gastric emptying, gastroesophageal reflux, and esophagitis. So, what are the pharmacological effects and clinical applications of domperidone? Below, we address this question.
Pharmacological Effects and Clinical Applications of Domperidone
1. Enhancement of Gastric Motility
Domperidone enhances gastric motility by stimulating gastric peristalsis, shortening postprandial gastric emptying time, increasing the diameter of the pylorus (the junction between the stomach and duodenum), and prolonging its relaxation phase—thereby facilitating food passage into the intestine. Additionally, domperidone increases the tone of the lower esophageal sphincter, thereby preventing gastroesophageal reflux and effectively augmenting gastric motility.
2. Promotion of Gastric Peristalsis
As a commonly prescribed agent for gastrointestinal disorders, domperidone’s primary therapeutic effect is the stimulation of gastrointestinal motility. Following administration, it alleviates symptoms such as gastrointestinal discomfort and dyspepsia, and also relieves digestive tract symptoms including belching, nausea, and vomiting.
3. Promotion of Postpartum Lactation
Domperidone elevates serum prolactin levels in women, thereby exerting a modest stimulatory effect on postpartum lactation. However, it should be noted that domperidone is not indicated for the treatment of prolactinomas. Moreover, when used specifically to elevate serum prolactin, its duration of use must be strictly limited to avoid adverse effects.
Knowledge Extension: Risks Associated with Long-Term Domperidone Use
1. Domperidone is primarily indicated for dyspepsia, nausea, vomiting, and belching, and functions by enhancing gastrointestinal motility—producing marked improvement in symptoms such as gastric distension and dyspepsia. Patients with more severe conditions may require prolonged treatment; however, for mild gastrointestinal disorders, a single-day course may suffice to avoid adverse effects such as diarrhea, headache, and fatigue.
2. Prolonged dependence on medication may impair the body’s intrinsic regulatory capacity and immune function, while simultaneously increasing susceptibility to drug-induced toxicity. Furthermore, chronic use of domperidone to enhance gastric motility and treat dyspepsia may lead to the development of drug resistance, reduced drug sensitivity, and significant impairment of the body’s natural immune defenses.
3. Long-term domperidone use may cause hepatic injury, manifesting as jaundice and impaired liver function; in severe cases, acute hepatic necrosis may occur. It may also induce thyroid enlargement and hypothyroidism. Renal toxicity is another potential risk, presenting as crystalluria, hematuria, and cylindruria. Rare but serious adverse reactions include interstitial nephritis and renal tubular necrosis.
The above outlines the pharmacological effects and clinical applications of domperidone. We hope this information proves helpful to you.
