Effects of exepanol-HCl, metoclopramide and domperidone on the lower esophageal sphincter of dogs.

The actions of rac. 3,5-cis-2,3,4,5-tetrahydro-3-methylamino-1-benzoxepine-5-ol hydrochloride (prop. INN exepanol-HCl, KC 2450), metoclopramide and domperidone on the resting pressure of the lower esophageal sphincter (LES) were studied in anesthetized and conscious beagle dogs using pull-through manometrical methods. Exepanol-HCl proved to enhance the LES pressure (LESP) significantly both in anesthetized and conscious dogs. The action of domperidone which was used as reference compound in the anesthetized dog experiments was less pronounced. In conscious dogs the actions of exepanol-HCl and metoclopramide were comparable. Domperidone was not active in this test.