If your horse is prone to gastric ulcers, the right supplement can support stomach health alongside veterinary treatment. The best supplements typically contain a combination of buffering agents, mucosal coating ingredients, and soothing herbs. No supplement replaces veterinary diagnosis or medication, but many owners use them proactively during stress, travel, or training. Below, we break down the most effective types and what to look for.

Antacid Powders and Pellets

These products neutralize excess stomach acid, raising the pH to less acidic levels. Key ingredients often include calcium carbonate or magnesium hydroxide. They are best fed before work or stressful events to buffer acid surges. Look for powders that mix easily into feed and have a palatable flavor. Some also include prebiotics to support hindgut health. Use as a short-term buffer rather than a standalone solution.

Alginate-Based Pastes and Liquids

Alginates, derived from seaweed, form a protective raft on top of the stomach contents, preventing acid splash onto the sensitive squamous mucosa. These are ideal for horses that undergo intense exercise or trailer frequently. Pastes are convenient for spot treatment, while liquid forms can be added to water or feed. Alginates work quickly and are often used before riding or competition.

Pectin-Lecithin Complexes

Pectin and lecithin work together as a barrier. Pectin thickens in the stomach, while lecithin forms a lipid layer that protects the mucosal lining. This combination is especially useful for horses with moderate to high ulcer risk, such as performance horses or those on continuous NSAID therapy. Look for products that specify the percentage of lecithin and pectin. They are often given daily for maintenance.

Herbal Soothing Blends

Herbs like slippery elm, marshmallow root, chamomile, and licorice root are traditionally used to soothe and protect the gastric mucosa. These are not acid neutralizers but support the natural healing process. They are often added to feed as powders or included in multi-ingredient formulas. While not as clinically studied as alginates, many owners report positive results. Choose products with guaranteed potency and no added sugars.

What to Look for in a Supplement

  • Ingredients: Prioritize pectin, lecithin, alginates, and antacids. Avoid fillers like corn or soy.
  • Form: Pellets are easiest for fussy eaters; pastes for on-the-go; powders for mixing.
  • Feeding schedule: Most require twice-daily dosing for consistent protection.
  • Palatability: Horses must accept it; some are flavored with apple or molasses but check sugar content.
  • No hidden stimulants or banned substances for competition horses.

When to Use Supplements vs. Medication

Supplements are supportive, not curative. If your horse shows signs of colic, poor appetite, weight loss, or behavioral changes, consult a veterinarian for endoscopy diagnosis. Prescription medications like omeprazole are often needed for active ulcers. Supplements can be used alongside medication or during weaning off treatment. Always ask your vet before combining.

Practical Feeding Tips

  • Offer supplement with a small meal before exercise to ensure it coats the stomach.
  • Consistent timing matters; give daily at the same times.
  • Keep a log of feeding and symptoms to discuss with your vet.
  • Provide free-choice hay to maintain saliva and buffering.

Choosing the best supplement depends on your horse’s specific risk factors (workload, diet, stress). Start with one type, monitor for 2-4 weeks, and adjust as needed. Remember, no supplement is a substitute for good management: frequent forage, reduced grain, and consistent turnout.

Key Takeaway

Choose a supplement with pectin, lecithin, alginates, or antacids that fits your horse’s routine, and always consult a vet for diagnosis and serious cases.

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