Aluminum Hydroxide Gel
Aluminum Hydroxide Gel is an oral phosphate binder and antacid for dogs, cats, and horses. It works by binding to phosphorus in the gastrointestinal tract to prevent its absorption into the bloodstream, while also reacting with gastric acid to help adjust stomach pH levels.
The uses and pharmacology described below reflect the FDA-approved labeling for this active ingredient; your veterinarian determines whether and how they apply to your animal's treatment plan.
Veterinarians most commonly consider aluminum hydroxide when a patient is presented with hyperphosphatemia, a condition characterized by elevated phosphorus levels in the blood often associated with chronic kidney disease. It may also be a point of discussion for managing gastric ulceration or hyperacidity. By binding to dietary phosphorus within the digestive tract, your veterinarian can manage the systemic absorption of this mineral.
At a pharmacological level, aluminum hydroxide acts as a non-systemic phosphate binder. When administered with food, the aluminum ions in the medication react with dietary phosphate in the small intestine to form insoluble aluminum phosphate complexes. These complexes are not absorbed by the intestinal lining and are instead excreted safely in the feces. This mechanism help address the buildup of phosphorus in the bloodstream without requiring the medication to enter the circulatory system. As an antacid, it works by neutralizing existing gastric acid and inhibiting the activity of the enzyme pepsin. Your veterinarian will determine whether aluminum hydroxide is appropriate based on your pet’s diagnostic testing results and overall metabolic status.
Prescription only. Use only under the direction of a licensed veterinarian. This information is not a substitute for veterinary diagnosis, prescribing or monitoring. Compounded drugs are not approved by the FDA for safety or effectiveness.
Commonly observed effects of aluminum hydroxide include constipation, which is the most frequent clinical shift noted by owners. In some patients, a decrease in appetite or mild nausea may occur. Because this medication can influence the absorption of other prescriptions, your veterinarian will typically recommend a specific timing schedule for administration relative to other medications. Owners should watch for signs of significant lethargy or persistent digestive changes and contact their veterinarian promptly if these behavioral shifts occur.
This medication is typically used with extra caution in patients with known intestinal obstructions or severe dehydration. Long-term use in patients with significant renal impairment is carefully monitored by veterinarians to avoid the potential for aluminum accumulation, though this is considered rare in veterinary patients. Before starting a protocol, ensure your veterinarian has a complete history of all other supplements and medications your pet is receiving, particularly antibiotics like tetracycline or certain heart medications. Your veterinarian is the right person to provide guidance on the necessary duration of use and the most commonly considered monitoring plan to ensure the management approach remains suitable for your pet's individual health status.
Yes. Aluminum hydroxide is a prescription medication and can only be dispensed by a licensed pharmacy upon receipt of a valid authorization from a licensed veterinarian. Mixlab verifies all authorizations before any medication is prepared or shipped to your home.
Yes. While aluminum hydroxide is available in various commercial powder and liquid formats, Mixlab can compound this medication into specialized strengths or alternative flavored dosage forms if your veterinarian determines a customized preparation better suits your pet’s needs. The decision between a commercial and compounded product rests with the prescribing veterinarian.
Veterinarians recommend administering aluminum hydroxide during or immediately after a meal so that it can interact directly with the phosphorus found in your pet's food. This timing allows the medication to bind the phosphate in the gut before it has a chance to be absorbed into the bloodstream.
Your veterinarian will monitor your pet's phosphorus levels through periodic blood work to evaluate the physiological response to the medication. These diagnostic follow-ups allow your veterinarian to determine if the management approach is addressing your pet’s specific metabolic requirements.
