<prompt> All of the following drugs intensify gastrointestinal motility ExceptPapaverineMetoclopramideDomperidoneCisapride  <response>: Papaverine an opioid decreases motility Prokinetic drugs are 5-HT3 antagonists granisetron, ondansetron, and tropisetron, 5-HT 4 -receptor agonists Cisapride, Mosapride, Tegaserod, D 2 -receptor antagonists Metoclopramide and domperidone, Cholinomimetic agonists bethanechol, Neostigmine Ref:Katzung 13th edition pg 531 