My dog has vomiting problems actually he regurgitates his food which is different from vomiting. Vomiting is and active process, gagging, heaving and retching are the body actively expels the stomach contents. The dog will give some sort of warning if he is about to vomit. If your dog does this then he is vomiting. Regurgitation is passive. After dealing with the problems similar to yours for 1 1/2 years changed Vets. First we treated my dog has having allergies, but when the problem continued my Vet ran various blood, x-rays and other tests, the results of these test determine that my dog has Megaesophagus a treatable but not curable physical problem that affects the way food is transported into the stomach through the esophagus. I would suggest that you either talk to your Vet about running tests to determine if he has underlining problems such as this or change to a Vet that has more experience with problems of this nature.
