Ulcer guards contain a pharmaceutical acid suppressant, typically omeprazole, and work by reducing the amount of acid the stomach produces in the first place. General digestive supplements work differently, they don't suppress acid, they support the gut in other ways.

• Ulcer guards: reduce gastric acid output, used for prevention or treatment of diagnosed squamous ulcers, often prescribed around competition or travel stress
• Probiotic/prebiotic blends: repopulate or feed beneficial gut bacteria, useful after antibiotic use or feed changes
• Psyllium based products: bind loose sand or debris in the gut, aimed at preventing sand colic rather than ulcers
• Buffering formulas: neutralize excess acid using ingredients like calcium or magnesium compounds, often used as daily maintenance rather than acute treatment

Psyllium husk swells when it absorbs moisture in the gut, forming a gel-like bulk. As that bulk moves through the intestine, it picks up loose sand particles that have settled in the colon from grazing on sandy soil or short pasture, and helps carry that sand out with normal manure passage. It's typically fed in cycles, often a week per month, rather than continuously, since continuous use can reduce its gel-forming effectiveness over time.

No, and mixing them up leads to picking the wrong product for the situation.

Most gut balance and buffering supplements need consistent daily feeding for two to four weeks before an owner notices changes in appetite, manure consistency, or coat condition, since they're working on a microbial population that shifts gradually rather than overnight. Ulcer guard pastes act faster on acid suppression, often within days, but full mucosal healing after a confirmed ulcer diagnosis is usually a four week veterinary protocol at minimum, sometimes longer depending on ulcer severity and scope location.

No. Supplements sold over the counter are formulated for maintenance, prevention, and general gut support, not for treating an existing diagnosed ulcer at a clinical dose. A horse showing signs like girthiness, poor appetite, weight loss, or behavior changes under saddle should be scoped by a veterinarian before starting any product, since ulcer severity varies and the treatment dose of omeprazole needed to heal an active ulcer is higher than most maintenance products provide. Once a vet has treated the acute ulcer, a maintenance supplement can be a reasonable part of a long-term prevention plan.

1. Intermittent loose manure or manure with visible undigested feed
2. Girthy or cinchy behavior when tacking up
3. Reduced appetite or picking at grain
4. Weight loss without an obvious cause like workload or dental issues
5. Horses on sandy pasture or dry lots with limited grazing
6. Recent changes in feed, travel, stall rest, or competition stress
7. A history of NSAID use, which is a known contributor to gastric ulceration