Aluminum Hydroxide

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al-U-min-um hy-DROX-side - Pronunciation guide

Brand Names

  • Aluminum Hydroxide BP Botulism Tablet
  • Aluminum Hydroxide Gel


Aluminum hydroxide is an antacid used to reduce stomach acid, treat upset stomach or gastritis, ulcers, other digestive disorders, and in certain kidney conditions, to reduce phosphate level. According to veterinarians, the same ulcer medications used in people are effective in horses.


Diagnosis of stomach problems in horses is sometimes difficult, but with the advent of fiberoptic gastroscopy, it is possible to diagnose problems before an acute rupture or peritonitis develop. Aluminum hydroxide, in the form of Amphogel, is prescribed by veterinarians to reduce stomach acid and treat ulcers, gastritis, and other stomach and intestinal problems. Combined with relief from too much stress, and with H-2 blockers, such as Tagamet and Zantac, aluminum hydroxide helps reduce stomach acid and heal ulcers.

Dosage and Administration

Aluminum Hydroxide
Method Dosage
(click row for calculator)
Concentration Period Duration
Oral 64000-80000 mg 320 mg/ml 3 times daily 4 weeks


  • Calculator is for educational purposes only. Follow your veterinarian's instructions regarding use of this, or any medication.

Recommended to be followed up with gastroscopy to ensure healing is complete

Side Effects

Some loss of appetite and constipation may occur.


Aluminum hydroxide is generally safe to use with horses. Follow veterinarian's and manufacturer's instructions closely.


No adverse drug interactions are noted in literature.


Clinical experience with overdoses of aluminum hyroxide is very limited and the drug is considered to have a wide margin of safety.


Aluminum Hydroxide GelAluminum Hydroxide Gel


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.