There are a few things that you could try. I would put a half dose of ANXIETREX in the water and the other half on the food for a few weeks. If you know what the stressor is, before it happens give a Chill-Out Chew. Vetionx has that, too.
Diet is another important factor. What do you give for food, treats, and supplements? I would give a grain free food and the type of protein I choose is dependent upon the symptoms of the dog. I would definitely give probiotics and Omega 3,6,9. Does your dog have any other health issues or allergies? Looking forward to your reply.