Welcome to the Claro® website


Canine otitis externa is one of the most common conditions presented to veterinary clinics. Claro is a first-line treatment option that offers a solution for acute otitis externa cases in just ONE dose.

Claro offers:


• A single, 1mL dose in each affected ear treats dogs of all sizes
• No wait time between ear cleaning and product administration


• Up to 80% of owners give the incorrect dose when administering ear products to their dog.
• Ensure treatment compliance by removing at-home treatments with Claro


• With a unique combination of three active ingredients, Claro® effectively treats the most common pathogens associated with 70-90% of acute otitis externa (OE) cases.


Claro® contains the unique combination of florfenicol, mometasone furoate, and terbinafine hydrochloride to provide effective anti-bacterial, anti-fungal and anti-inflammatory protection.

  •    Anti-bacterial


    •        • An established first-line antibiotic for the
               topical treatment of otitis externa2
    •        • Florfenicol is classified as a Category III
               Antimicrobial3, and not listed as critically
               important antimicrobial in human
               medicine by the World Health
               Organisation (WHO)4
    •        • Provides broad-spectrum bacteriostatic
    •        • Effective  against S. pseudintermedius,  a  
               common  bacterial  pathogen associated
               with otitis externa

  •    Anti-fungal

        Terbinafine hydrochloride

    •        • Provides potent anti-fungal activity
    •        • Selectively inhibits  the  early  synthesis  
             of  ergosterol, an essential component of
             the membranes of yeasts  and fungi

  •    Anti-inflammatory

        Mometasone furoate

    •       • High-potency corticosteroid
    •       • Anti-inflammatory and anti-pruritic


Results from a randomised, multi-centre and double-blinded clinical field trial found that Claro®demonstrated a significantly higher treatment success rate compared to the control group** for cases of otitis externa caused by Staphylococcus pseudintermedius and Malassezia pachydermatis.5

Defined as substantial alleviation of otitis externa based on improvement in clinical severity score at day 30. (P = 0.0001)

**Control = solution with active ingredients omitted  

***Based on erythema, exudate, swelling and ulceration

  •           Indication: Claro® is indicated for the
              treatment of otitis externa in dogs
              associated with susceptible strains of yeast
              (Malassezia pachydermatis) and bacteria
              (Staphylococcus pseudintermedius).1

              Active Ingredients: florfenicol, mometasone
              furoate,terbinafine hydrochloride.

Contact your Elanco Sales Representative for more information. 

The label contains complete use information, including cautions and warnings. Always read, understand and follow the label and use directions.  

To report suspected adverse drug events or for technical assistance, contact Elanco Canada Limited at 1-800-265-5475.

1.  Canadian Claro product label
2.  Sue Paterson, 2018. The use of antibiotics and antimycotics in otitis. UK Vet Companion Animal, (23), 11, 608-613
3.  Health Canada. Categorization of Antimicrobial drugs based on importance in human medicine. 2009. [Cited 2021 May 31]. Avail-able from:
4.  World Health Organization (WHO), Advisory Group on Integrated Surveillance of Antimicrobials (AGISAR). Critically Important Antimicrobials for Human Medicine. 3rd. Geneva, Switzerland: WHO, 2020.
5.  Blake,  J. et. al., 2017. Evaluation of a single-administration ototopical treatment for canine otitis externa: a randomised trial. Veteri-nary Record Open, 4(1), p.e000219.

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