Otitis externa

Choose the right solution for dogs with otitis externa

Mometamax (Gentamicin Sulfate, Mometasone Furoate Monohydrate, and Clotrimazole, Otic Suspension) is an otic suspension for the treatment of otitis externa in dogs caused by susceptible strains of yeast and bacteria.

Posatex (Orbifloxacin, Mometasone Furoate Monohydrate and Posaconazole, suspension) is an otic suspension indicated for the treatment of otitis externa in dogs associated with susceptible strains of yeast and bacteria.

Otomax (Gentamicin Sulfate, Betamethasone Valerate, and Clotrimazole, Ointment) is indicated for the treatment of canine acute and chronic otitis externa associated with yeast and/or bacteria susceptible to gentamicin.

Disease overview

Otitis externa is the inflammation of the external ear canal. It is a common problem that affects nearly 13% of dogs.1

Predisposing factors that increase the risk of otitis externa:

  • Conformation: Stenotic canals, pendulous pinnae, hair overgrowth
  • Moisture: Swimming, hot/humid climates

Primary causes incite inflammation

  • Allergies are the #1 cause (i.e., environmental, food, and contact)
  • Foreign bodies
  • Keratinization disorders
  • Hypothyroidism
  • Tumors

Secondary Factors

  • Bacterial infection
  • Yeast overgrowth
  • Progressive pathologic changes

Clinical signs of canine otitis externa

  • Inflamed ear/redness
  • Scratching/itching (pruritus)
  • Head shaking
  • Heat
  • Pain
  • Malodor (foul smell) from the ear
  • Hearing loss
  • Inflammatory exudate (discharge) present in and around the external ear canal

Why do dogs get otitis externa?

Most dogs develop otitis externa because of allergies to environmental substances. The allergic reaction makes the ear itchy. Dogs respond by scratching, which damages the lining of the ear canal. Yeast and bacteria then seize the opportunity and infect the skin.

Otics Portfolio

Canine Otitis Externa

A rundown of the features, benefits, and advantages of our canine otitis externa treatments in an easy-to-read, tabular format. Also includes a handy side-by-side ingredient comparison with other products.


Otics Pet Parent Handout

“Details About Otitis Externa” is just what canine pet parents need to understand this condition, its clinical signs and causes. It explains how otitis externa is diagnosed and treated, as well as steps to proper ear cleaning.


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  1. State of Pet Health 2016 Report. Banfield Pet Hospital. 2016. stateofpethealth.com