Aluminum Acetate Solution, Topical + Hydrocortisone

By Alison Hamilton, DVM

What is aluminum acetate solution, topical + hydrocortisone?

Aluminum acetate solution, Topical (Burow's solution) + hydrocortisone (Corti-Derm®, Cort/Astrin®, Hydro-B 1020®), is a topical treatment used to relieve inflammation and itchiness in dogs. Aluminum acetate solution is an astringent and drying agent used for the temporary relief of minor skin irritation such as insect bites, rashes, and allergies. It cleanses, cools, and dries inflamed skin. The addition of hydrocortisone provides anti-inflammatory and antipruritic (anti-itch) activities.

Aluminum acetate solution, topical + hydrocortisone is also commonly used to treat ear infections (otitis externa) in dogs due to its antibacterial effects and anti-inflammatory effects.

Generic forms of Aluminum acetate solution, topical + hydrocortisone can be prescribed off label to treat inflammatory skin conditions and ear infection (otitis externa) in dogs and cats. Many drugs are commonly prescribed for off-label use in veterinary medicine. “Off label” means the drug is being used in a way that has not been reviewed or approved by the U.S. Food and Drug Administration (FDA) or Health Canada. In these instances, follow your veterinarian’s directions and cautions carefully, as they may be significantly different from those on the label.

How do I give my pet aluminum acetate solution, topical + hydrocortisone?

Aluminum acetate solution, topical + hydrocortisone comes in a topical liquid form.

  • This medication should only be used topically.
  • Wash your hands after application or wear gloves when applying this medication.
  • Topical use on the skin is usually by way of a wet compress, dressing, or soak.
  • Topical use in the ear is usually by way of liquid drops administered into the ear canal.
  • Follow your veterinarian’s directions and measure liquid forms of this medication carefully. 
  • Avoid contact with the eyes.
  • Do not cover the application site with plastic or airtight bandage; allow for drying and evaporation. 
  • Do not allow your pet to lick or chew the affected sites for at least 20–30 minutes after application.

Aluminum acetate solution, topical + hydrocortisone may suppress reactions to intradermal allergen skin tests. It is recommended that this medication be withdrawn two weeks (14 days) before intradermal skin testing for dogs and cats.

This medication will take effect quickly, in about one to two hours, but its effects may not be visibly noticeable for a few days.

What if I miss giving my pet the medication?

If you miss a dose of aluminum acetate solution, topical + hydrocortisone, give it as soon as you remember and then continue with the regular dosing schedule. However, if it is almost time for the next dose, skip the missed dose and resume the regular dosing schedule. Do not give the pet two doses at once.

Are there any potential side effects from aluminum acetate solution, topical + hydrocortisone?

Aluminum acetate solution, topical + hydrocortisone may cause the following side effects:

  • dry skin or skin irritation in some patients
  • redness of skin

If excessive skin irritation occurs or the existing skin irritation and/or swelling worsens, discontinue this medication, and contact your veterinarian immediately. 

With long-term use, aluminum acetate solution, topical + hydrocortisone may cause the following side effects:

  • changes such as thinning of the skin, increased fragility of the skin, and the development of cysts or blackheads (comedones) (although these changes are less severe than those seen with more potent steroids)
  • decreased production of cortisol (rare)

The following reactions are rare, but if they occur, contact your veterinarian immediately:

  • an allergic reaction such as irregular breathing, rash, fever, puffiness and swelling around the face

Drug sensitivities can develop over time with repeated exposure. Your pet may have no reaction after the first few doses but may develop a sensitivity later. It is important to watch for signs of an allergic reaction over the entire course of treatment.

This short-acting medication should stop working within 24 hours, although effects may last longer in pets with liver or kidney disease

Are there any risk factors for this medication?

This medication should NOT BE USED in patients who:

  • have a deep skin infection
  • have tuberculosis
  • are pregnant, nursing or breeding
  • have a known sensitivity to Burow's solution + hydrocortisone or a previous allergic reaction to this medication

This medication should be USED WITH CAUTION in:

  • diabetic patients
  • patients with Cushing's disease (hyperadrenocorticsm)

Prolonged use should be avoided or limited to one to two weeks at a time, to prevent potential skin atrophy and systemic absorption.

Are there any drug interactions I should be aware of?

Aluminum acetate, topical + hydrocortisone is not known to have any specific drug interactions. Be sure to tell your veterinarian about any medications (including vitamins, supplements, or herbal therapies) that your pet is taking before starting any new treatment.

Certain medications should be USED WITH CAUTION when given with hydrocortisone, including:

  • amphotericin B
  • cyclosporine
  • cyclophosphamide
  • erythromycin
  • estrogens
  • furosemide
  • insulin
  • mitotane
  • NSAIDs (aspirin, carprofen, deracoxib, etc.)
  • phenobarbital
  • phenytoin
  • rifampin
  • thiazide

Is any monitoring needed with this medication?

At home, monitor for any side effects such as those noted above. If side effects occur, discontinue the medication and contact your veterinarian.

How do I store aluminum acetate solution, topical + hydrocortisone?

  • Store this medication at a controlled room temperature, away from heat and direct sunlight. 
  • Store this mediation in its original container. 
  • Keep this medication out of reach of children and pets.
  • Ask your veterinarian for disposal instructions. Do not flush medications down the sink or toilet unless instructed to do so. 

What should I do in case of emergency?

If you suspect an overdose or an adverse reaction to the medication, call your veterinary office immediately. If they are not available, follow their directions in contacting an emergency facility.

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