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POM-V Prescription Required Companion Animal

Isaderm 5 mg/g + 1 mg/g Gel for Dogs

Active ingredients: Betamethasone, Fusidic Acid

Form

Gel

Species

Dogs

Manufacturer

Dechra Veterinary Products A/S

VMD MA No.

24883/5000

What it's used for

For the topical treatment of surface pyoderma in the dog such as acute moist dermatitis (‘hot spots’) and intertrigo (skin fold dermatitis).

Full indications, dosage and side effects ↓
View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

Paying less for Betamethasone + Fusidic Acid

  1. 1

    Ask your vet for a written prescription

    They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.

  2. 2

    Fill it at a registered online retailer

    The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Isaderm 5 mg/g + 1 mg/g Gel for Dogs — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

For the topical treatment of surface pyoderma in the dog such as acute moist
dermatitis (‘hot spots’) and intertrigo (skin fold dermatitis).
Cutaneous use.
First, the hairs covering the lesions should be gently clipped. The affected area
should then be thoroughly cleaned with an antiseptic wash before application of the
gel. The amount applied should cover the affected area in a thin layer. Apply
approximately 0.5 cm length of gel per 8 cm
of lesion, twice daily, for a minimum
period of 5 days. Treatment should continue for 48 hours after the lesion has
resolved. The treatment period should not exceed 7 days. If there is no response
within three days, or the condition deteriorates, the diagnosis should be re-evaluated.
Do not use for the treatment of deep pyoderma.
Do not use in pyotraumatic furunculosis and pyotraumatic folliculitis with ‘satellite’
lesions of papules or pustules.
Do not use where fungal or viral infection is present.
Do not apply to the eye.
Do not use over large surface areas or for prolonged treatment.
Do not use in cases of known hypersensitivity to the active substances or to any of
the excipients.
See section 4.7.

AN: 00862/2018
Issued: May 2019
Prolonged and intensive use of topical corticosteroid preparations or treatment of a
large cutaneous surface (>10%) is known to trigger local or systemic effects including
suppression of adrenal function, thinning of the epidermis and delayed healing.
Locally applied steroids may cause depigmentation of the skin.
Discontinue use if hypersensitivity develops to the product.
None.

Special precautions for use in animals:
Official, national and regional antimicrobial policies should be taken into account
when the product is used.
Betamethasone valerate can be absorbed percutaneously and may cause temporary
suppression of adrenal function.
The dog should be prevented from licking treated lesions and so ingesting the product.
Where there is a risk of self-trauma or a risk of accidental transfer to the eye, for
example, application of the product on the forelimb, preventative measures such as the
use of an Elizabethan collar should be considered.
Pyoderma is often secondary in nature. The underlying cause should be identified
and treated.
It is recommended that use of the product should be based on bacteriological
sampling and susceptibility testing. If this is not possible, therapy should be based on
epidemiological information about susceptibility of the target bacteria. Use of the
product deviating from the instructions given in the SPC may increase the prevalence
of bacteria resistant to fusidic acid.
The safety of the combination has not been assessed in puppies of less than 7
months.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
Corticosteroids may produce irreversible effects in the skin; they can be absorbed and
may have harmful effects, especially with frequent and extensive contact or in
pregnancy. Pregnant women should take special care to avoid accidental exposure.
Always wear single-use disposable gloves when applying this product to animals.
Wash hands after having applied the product.
Care should be taken to avoid accidental ingestion by a child. In the case of accidental
ingestion, seek medical advice immediately and show the package leaflet to the
physician.
People with known hypersensitivity to the active ingredients or to any of the
excipients should avoid contact with the veterinary medicinal product.
None known.
Do not store above 30°C.
Do not refrigerate or freeze.
Keep the tube in the outer carton.
Not applicable.
5.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.

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