Your horse scoped clean. The vet said there are no ulcers. You felt relieved for about 48 hours, and then you watched your horse pin his ears at the girth again, or drop weight quietly through the summer, or just feel tight and reluctant in a way that has no clean diagnosis attached to it. Clean scope does not always mean a comfortable horse. That gap — between “no active ulcers” and “doing well” — is exactly where a lot of owners find themselves, and it is a genuinely tricky place to be.
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This post is about what the research suggests might be happening in that gap, and why many owners in this situation reach for Mad Barn’s Visceral+ as part of a broader management approach. It is not a substitute for veterinary workup. If your horse is uncomfortable, that conversation starts with your vet — full stop. But once you have ruled out what the scope can rule out, the question of what to feed next is a reasonable one.
What the Scope Actually Tells You — and What It Doesn’t
A gastroscope evaluates the squamous and glandular regions of the stomach. It is the gold standard for diagnosing gastric ulcers, and if your vet did a thorough scope and said it is clean, you can reasonably trust that finding.
What a scope does not evaluate: the small intestine, the cecum, or the hindgut. It also cannot tell you about the integrity of the mucosal lining in the glandular region beyond what is visually apparent, and it gives you no real picture of hindgut microbiome health or fermentation stability.
So when a horse scopes clean but still shows girth sensitivity, poor appetite, intermittent loose manure, reluctance to work through the back, or just a general flatness that was not there before — the hindgut is the first place most experienced equine vets and nutritionists will point you. Hindgut dysbiosis, mucosal irritation below the stomach, or disrupted fermentation can all produce signs that look a lot like foregut ulcers on the outside.
This is a veterinary conversation, not a supplement conversation. But if your vet has evaluated the hindgut angle and recommended supportive nutritional management alongside any treatment plan, this is where Visceral+ enters the picture.
Visceral+: What It Is and Why It’s Formulated the Way It Is
Mad Barn’s Visceral+ is a pelleted gut supplement designed to support both foregut and hindgut integrity, the mucosal barrier, and immune function. From $89.99.
The formulation detail that matters most for this specific situation: Visceral+ deliberately contains no added vitamins or minerals. It was built to layer cleanly on top of a balanced feeding program — Omneity, AminoTrace+, or whatever the horse is already on — without creating nutrient stacking problems. That is not an accident; it is a design choice that reflects how Mad Barn thinks about their products.
The ingredient list targets the mucosal lining specifically, and the research on several of the key components — including specific pre- and probiotics, marshmallow root, and other mucilage-supporting botanicals — suggests a mechanism that is distinct from what a proton pump inhibitor or antacid does. This is not a buffer. It is not suppressing acid. The framing is mucosal support and barrier integrity, which is a different target entirely.
Many owners use Visceral+ in situations that include:
- Post-scope maintenance after ulcer treatment, when the horse has healed but the underlying stress factors have not changed
- Horses with a history of hindgut sensitivity or recurrent loose manure
- Performance horses under heavy showing or travel schedules
- Horses on frequent or prolonged NSAID use, which has well-documented effects on gastric and intestinal mucosal health
- Horses who came off omeprazole and relapsed into girthiness or appetite suppression
It is also commonly fed during high-stress periods — clinics, shows, long hauls — as a management support tool, not because it treats anything, but because the research suggests the mucosal lining benefits from consistent nutritional support during physiological stress.
Who Visceral+ is not for: If your horse has not been scoped and you are guessing about ulcers, start with the vet. Visceral+ is an adjunct within a management plan, not a diagnostic tool and not a replacement for a diagnosis. A horse who scoped clean and is still uncomfortable deserves a thorough workup, not just a new supplement.
What to Pair with Visceral+ — and What Not To
Because Visceral+ contains no vitamins or minerals, it needs to be paired with a balancer or fortified feed. Mad Barn’s own guidance is clear on this: Visceral+ is not a standalone program.
The two most common pairings are:
Omneity — Mad Barn’s complete vitamin and mineral premix, available in powder or pellet form. The right choice for the average horse on decent hay who does not have metabolic complications. Omneity plus Visceral+ covers a lot of ground without overcrowding the bucket.
AminoTrace+ — Mad Barn’s enhanced-strength balancer for metabolic and high-demand horses. If your clean-scoped horse also has insulin resistance, PPID, poor hoof quality, or is on high-iron hay or water, AminoTrace+ is the more targeted pairing. Do not use AminoTrace+ and Omneity together — they are not designed to stack.
A word on dose: follow the product label and, where you have questions, talk to your vet or an equine nutritionist. I will not give you a number here because the right amount depends on context I do not have about your horse.
Ready to try Visceral+? Use my link for reader benefits at Mad Barn → https://madbarn.com?ref=18219
The Gut-Comfort Horse in Summer: A Few Management Notes
August is a genuinely hard month for gut-sensitive horses. Heat-stressed horses often drink less, which affects hindgut fermentation. Pasture quality is inconsistent. Show and clinic schedules peak. If your horse already has a tendency toward hindgut sensitivity, late summer tends to surface it.
A few things worth thinking through alongside any supplementation:
Forage access. The single most evidence-based thing you can do for gastric health is keep forage in front of the horse as continuously as possible. Hay nets, slow feeders, multiple small feedings — the mechanism here is that the equine stomach produces acid continuously, and without buffering from forage, that acid contacts the unprotected squamous mucosa. This is basic, but worth saying plainly.
Water and electrolytes. If your horse is sweating through summer work and not replacing electrolytes adequately, gut motility and fermentation both suffer. Mad Barn’s Performance XL Electrolytes are formulated against actual sweat composition rather than primarily as a palatability vehicle — worth considering if your horse’s water intake is variable in the heat.
Stress. Travel, new environments, changes in turnout or stall routine, the presence of unfamiliar horses — all of these have documented effects on gastric and hindgut health. You cannot supplement your way around a management problem, and a clean-scoped horse who keeps recurring in discomfort deserves an honest look at the stress load the schedule is placing on him.
If you want to go deeper on the nutrition side of this, Mad Barn publishes a genuinely thorough research library on gut health, ulcers, and hindgut function. I link to their main site rather than individual articles since their URL structure does not make those easy to share directly — but search their site and you will find it.
I also talked through the broader question of what to do when management feels stuck on the podcast, if that is more your format.
Closing Thoughts
A clean scope is good news. It is also, sometimes, only part of the picture. If your horse is comfortable and thriving after a clean scope, great — stop reading and go ride. If he is not, the hindgut conversation is worth having with your vet, and nutritional support for mucosal integrity is a reasonable part of what comes next.
Visceral+ is the most comprehensive gut-support product in Mad Barn’s lineup. It is formulated specifically for horses with a history of gut stress, and it is designed to work alongside a balanced program rather than replace one. For a horse who scoped clean but still is not right, it is the product I would be asking my vet and nutritionist about.
Ready to try Visceral+? Use my link for reader benefits at Mad Barn → https://madbarn.com?ref=18219
