Prokinetic drugs (motility stimulants)
Metoclopramide and domperidone:
- dopamine antagonists which stimulate gastric emptying and small intestinal transit
- enhance oesophageal sphincter contraction in reflux
- useful in non-ulcer dyspepsia and non-specific or cytotoxic-induced nausea and vomiting
- metoclopramide and occasionally domperidone may induce an acute dystonic reaction, particularly in young women and children.
Cisapride:
- motility stimulant releasing with no dopamine-antagonist properties acetylcholine in gut wall
- useful in oesophageal reflux, gastric stasis and non-ulcer dyspepsia
- drugs inhibiting cisapride metabolism can increase plasma concentration and cause disturbances of cardiac rhythm.
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