多潘立酮，商品名为吗丁啉，是一种口服和静脉注射用的抗多巴胺类药物，一般用以抑制恶心和呕吐，有时也用于促进乳汁分泌。

多潘立酮的抗催吐作用主要是由于其对外周多巴胺受体的阻滞作用，直接作用于胃肠壁，可增加食道下部括约肌张力，增强胃蠕动，促进胃排空，协调胃与十二指肠运动。

催乳作用主要是由于其刺激脑垂体催乳激素的释放。

Domperidone (INN, USAN, BAN, JAN) (brand names Motilium, Motillium, Motinorm Costi, Nomit, Brulium, Molax) is a drug developed by Janssen Pharmaceutica that acts as a peripherally selective antagonist of the dopamine D₂ and D₃ receptors. It is administered orally, rectally, or intravenously. Domperidone is used to relieve nausea and vomiting; to increase the transit of food through the stomach (that is, as a prokinetic agent via increasing gastrointestinal peristalsis); and to promote lactation (breast milk production) by release of prolactin. It is also used in scientific research to study the biological function of dopamine, an important neurotransmitter and hormone, in the body.