Definitely having your horse scoped is a good idea because then you’ll know what you’re treating. My mare had ulcers last year. I treated her with gastroguard, sucralfate and misoprostol. This is a horse turned out 24/7 on minimal grain. I never thought ulcers but she was being naughty in the hunt field and agitated in the trailer.
The treatment cleared up the ulcers – I scoped hear again. To keep her comfortable, I changed her feed to no grain – just beet pulp and a ration balancer, added alfalfa hay and Purina Outlast. For a while I also gave her papaya puree.
During hunt season I put her back on sucralfate and she came through just fine. There’s a strong temptation to throw everything including the kitchen sink at them, but having a baseline and knowing what causes improvement, is a sensible way to proceed.