Disorders of gastrointestinal motility commonly occur in patients with insulin-dependent diabetes mellitus. [1][2][3][4] They are usually associated with dyspeptic symptoms, such as nausea, vomiting, fullness and epigastric discomfort, and are an important cause of morbidity; they may also contribute to poor metabolic control of diabetes through a mismatch between duodenal nutrient load and onset of insulin action. 3,5 The presence of gastric motor and electrical abnormalities in diabetic patients supports the use of prokinetic drugs. Metoclopramide and domperidone, which are dopamine D 2 receptor antagonists, and cisaprideà, which is a 5-hydroxytryptamine-4 agonist that facilitates acetylcholine release at the level of the myenteric SUMMARY Background: Disorders of gastrointestinal motility are commonly detected in patients with insulin-dependent diabetes mellitus and are associated with significant morbidity. They contribute to poor metabolic control of diabetes. Aim: To assess the effect of an 8-week course of domperidone or cisapride on gastric electrical activity, gastric emptying time and dyspeptic symptoms in children with insulin-dependent diabetes mellitus and gastroparesis. Methods: Dyspeptic symptoms were assessed by a score system, gastric emptying time was measured by ultrasonography and gastric electrical activity was obtained by electrogastrography. Fourteen children received domperidone and 14 received cisapride. The median (range) ages were 11.6 years (5-15 years) and 12 years (6-16.9 years), respectively. Symptom assessment, ultrasonography and electrogastrography were