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meye-LAN-tuh - Pronunciation guide

Brand Names

  • Mylanta


Mylanta is an antacid that works to neutralize stomach acid that has already been produced in the horse's stomach. With the advent of endoscopy, veterinarians have discovered that many horses have digestive system ulcers. These include race horses, competition horses, and pleasure horses not known to lead stressful lives.

Many veterinarians believe that modern-day feeding methods, which do not allow for lengthy periods of grazing, are responsible for many cases of ulcers. When the horse's stomach is empty between feedings, it is thought that the digestive acids being secreted damage the stomach, leading to ulcers.

While Mylanta may be useful for short-term relief of acid build-up, most veterinarians prescribe either H2 blocker medications, such as cimetidine, rantidine, or famotidine, or, more often, omeprazole, sold under the brand name, Gastrogard, which works by shutting down some of the stomach cells' ability to produce large quantities of hydrochloric acid. This gives an equine ulcer time to heal. In contrast, oral antacids, such as Mylanta, work to neutralize stomach acid that has already been produced and are only effective for short periods of time.


Although Mylanta is used for the treatment of ulcers in horses, other medications, including H2 blockers and omeprazole, are preferred because of the ability of these drugs to offer long-term effectiveness.

Dosage and Administration

Method Dosage Concentration Period Duration
Oral 200-250 ml 1 Mylanta Regular Strength 3 to 6 times daily Up to 2 weeks


  • 1Current Therapy in Equine Medicine 6 (N. E. (Norman Edward) Robinson. et al)
  • Extra-label use of drugs in treating animals is allowable only by licensed veterinarians within the context of a valid veterinarian-client-patient relationship, and does not include drug use in treating animals by the layman (except under the supervision of a licensed veterinarian).

Side Effects

No side effects are mentioned in available literature


Mylanta works on a short-time basis only and will not lead to healing of ulcers.


None mentioned in literature


No information noted.


Mylanta Liquid AntacidMylanta Liquid Antacid



About the Author

EquiMed Staff

EquiMed staff writers team up to provide articles that require periodic updates based on evolving methods of equine healthcare. Compendia articles, core healthcare topics and more are written and updated as a group effort. Our review process includes an important veterinarian review, helping to assure the content is consistent with the latest understanding from a medical professional.