This may sound out-of-the-box, but I’ve had some excellent success getting my ulcery horse happy and healthy and off Ulcerguard and gastrotek, etc. by getting the gut and gut microbes happy by pulling all grains and added sugars from his diet. The Ulcerguard and the Nexuim etc. are changing the colony of good bugs in the gut. Now that you have had the benefits of the Ulcerguard course, try to get the gut happy by feeding only grasses, legumes, and natural salt. There is a ton of reading here that explains the whys and how’s:
https://theequinepractice.com/why-horses-should-not-be-fed-grain/
link to all his nutrition blogs:
https://theequinepractice.com/travels-with-doc-t/horse-nutrition/
I pulled all grains and grain byproducts from my barn six months ago, starting with two weeks of only grass, grass hay, alfalfa flakes, and natural salt. After two weeks I started giving 1 pound of soybean meal (toasted/roasted, dehulled, oil extracted) per day ($0.38 per horse per day) to give the full range of amino acids needed to build muscle and top line and repair soft tissue, etc. I was already feeding free choice good quality hay, so cutting out supplements and ration balancers and top-of-the-line$$$$ grains and treats and ulcer treatments from my barn has saved me a boatload of money. And I have a group of happy horses as a result. The once ulcery guy has given no ulcery signs, has dramatically improved his once-explosive behavior, is schooling all the GP and competing I-2. Several friends have started the same protocol after seeing my horses’ results and none have gone back to their old way of feeding.
The great thing about this feed program is you can try it for a few weeks and if you don’t see improvement just go back to the old way you have been doing things.
There is is tons of reading in those links, read the comments/discussions at the end of the blog, too. Then if you are willing, give it a try. I’m six months in, and my local vet just came to do spring shots and was thrilled with the condition of my horses on this protocol: free-choice grass hay (Timothy in my case), 4-5 pounds alfalfa as a protein source (I feed it as hay but pellets or cubes is fine), 1 pound soybean meal as a protein source (after six months I’m about to cut this down to 1/2 pound per day), Himalayan salt (natural Redmond salt or white salt are also okay, don’t use red salt blocks that use molasses binders), and only alfalfa cubes or roasted peanuts as treats (alfalfa, soybean meal, and peanuts are all legumes). No cookies, peppermints, carrots, etc.
I havent used or needed one drop of Ulcerguard or other ulcer treatment since switching to this protocol. I was TERRIFIED the first time I trailered for an away weekend without Ulcerguard, took a tube with me just in case…didn’t need it. It’s hard to make the leap of faith to try this after all the marketing we’ve all been inundated with by feed, supplement, and drug companies, but I am SO grateful that, out of severe desperation, I took the plunge. The benefits have been many.
The Succeed course is probably fine to finish as you start this protocol but I’d pull everything else but hay and salt the first two weeks and then add in only SBM. Give it a couple more weeks and evaluate. Good luck!