Maybe you won't have to try anything once he is off meds. Is there anywhere you can walk him that isn't so busy? We have clients that drive to a conservation area every night after dinner to walk their dogs so that the dogs can have a relaxing walk instead of dealing with traffic, bicycles etc. Their Scottie was really reactive which is why they started these nightly forays to a quieter place. He's still more reactive than most dogs but can now walk in town without looking like a dog going to the chamber or trying to start something with every tree, dog, human, post - well you get the picture. Just a thought.
