Monoamine oxidase inhibitor (MAOI)
substances that inactivate the enzyme monoamine oxidase which regulates certain transmitter chemicals between nerves. These compounds include certain types of antidepressants and also insecticides containing amitraz (such as Mitaban and Preventic collars). Motility: movement, e.g., intestinal motility is the muscular contractions of the intestines which move the food from the stomach to the anus.