The action of trimebutine maleate on gastrointestinal motility is mediated by opiate receptors in human subjects.
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The effects of trimebutine on interdigestive motor activity of the small intestine and the colon were studied in healthy volunteers. Trimebutine induced in all subjects phase III-like motor complexes, which were similar to spontaneously occurring phase III complexes of the interdigestive cycle in antrum and duodenum. Trimebutine-induced complexes were suppressed by naloxone. Trimebutine and/or naloxone had no consistent effect on interdigestive contractile activity in the colon.
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