A battery-powered device intended to apply electrical current directly to the soft tissue in the mouth of a patient to stimulate a sensorial nerve for increased secretion of saliva from the salivary glands to treat dry mouth condition (xerostomia). It passes a low electric current pulse-train via its integrated electrodes intended to generate an electromagnetic (EM) field around the targeted nerve. The device is activated by the patient with an integrated control or included remote control. This is a reusable device.