Did your vet endoscope your horse and look for ulcers? The cost of that is far less than the Ulcerguard. It might be worth getting a baseline on your horse.
When do horses have an empty stomach as grazing animals at 4x per day? Horses are grazer and eat mostly all day. Can your vet provide clarification on this point?
ooooh, the bet practice for you horse may be contraindicated because of your laminitic horse. Do you know exactly why your horse developed laminitis? Any shoeing changes? Obvious diet changes?
Truth be told, I didn’t scope him after this. He in time responded to the training and the diet. I was throwing calories at him -grain, beet pulp, oil and he eventually adjusted although it took him years. Turnout (24/7 for my horse), training, and regular work ended up working for my horse. as a dressage rider, I was clueless about ground work but groundwork really was key for this horse to understand horse-human communication and “learning to learn how to learn”. I can’t emphasize that enough.