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AVM-GSL Over the Counter Companion Animal

Advantage 100 mg Spot-on Solution for Medium Dogs

Active ingredient: Imidacloprid

Form

Spot-on

Species

Dogs

Manufacturer

Elanco GmbH

VMD MA No.

52127/5157

What it's used for

Fleas on dogs are killed within one day following treatment. One treatment prevents further flea infestation for four weeks. For dogs of less than 4 kg bod...

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 Imidacloprid

  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.

Clinical information

Advantage 100 mg Spot-on Solution for Medium Dogs — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.

Fleas on dogs are killed within one day following treatment. One treatment
prevents further flea infestation for four weeks.
For dogs of less than 4 kg body weight or 10 kg body weight and greater, use the
appropriate Advantage spot-on product.
Underdosing could result in ineffective use and may favour resistance
development. To ensure a correct dosage, body weight should be determined as
accurately as possible.
Dosage and treatment schedule
Dog (kg bw)ProductNumber of
Tubes
mg/kg bw4 to less than 10Advantage 100 mg spot-on
solution for medium dogs
1 x 1.0 ml10 - 25Dogs weighing less than 4 kg / ≥ 10 kg bodyweight: use the appropriate Advantage
spot-on solution for dogs.
Fleas are killed within one day following treatment. One treatment prevents
further flea infestation on dogs for up to 4 weeks. Should re-treatment become
necessary earlier than 4 weeks, do not re-treat more frequently than weekly.
Method of administration
Remove one tube from the package. Hold tube in an upright position, twist and
pull off cap. Use reversed cap to twist and remove seal from tube.
After use, replace cap on tube.
With the dog in the standing position, part the coat between the shoulder blades
until the skin is visible.
Place the tip of the tube on the skin and squeeze firmly several times to empty
the contents directly onto the skin.Do not apply an excessive amount of solution

Amended pages: February 2026
at any one spot that could cause some of the solution to run off the side of the
dog Correct application will minimise the opportunity for the dog to lick the
product.Apply only to undamaged skin.
Do not treat unweaned puppies of less than 8 weeks of age.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.

Amended pages: February 2026
Dogs.
Very rare
(<1 animal / 10,000 animals
treated, including isolated
reports):
Agitation
Hypersalivation
Disorientation, Nervous system disorder (e.g.
Depression,Incoordination, Tremor)
Skin reactions (e.g. Hair loss, Itching, Reddening of
the skin, Skin lesion)
May occur if the dog licks the application site immediately after treatment due to
the bitter taste. This is not a sign of intoxication and disappears within some
minutes without treatment.
Reporting adverse events is important. It allows continuous safety monitoring of a
veterinary medicinal product. Reports should be sent, preferably via a
veterinarian, to either the marketing authorisation holder or the national
competent authority via the national reporting system. See the package leaflet for
respective contact details.
Special warnings:
If signs of disease persist or appear, consult a veterinary surgeon.
Re-infestation from emergence of new fleas in the environment may continue to
occur for six weeks or longer after treatment is initiated. To aid reduction in
environmental challenge, the additional use of a suitable environmental treatment
against adult fleas and their developing stages is recommended. In order to
reduce further the environmental challenge, it is recommended that all dogs, cats
and rabbits in the household are treated, as necessary, with an appropriate
product. Treatment of nursing bitches controls flea infestations on both dam and
offspring.
The veterinary medicinal product remains effective if the animal becomes wet, for
example after exposure to heavy rain or after swimming. However, re-treatment
may become necessary, depending on the presence of fleas in the environment.
In these cases do not treat more frequently than once weekly.
Unnecessary use of antiparasitics or use deviating from the instructions given in
the SPC may increase the resistance selection pressure and lead to reduced
efficacy. The decision to use the product should be based on confirmation of the
parasitic species and burden, or of the risk of infestation based on its
epidemiological features, for each individual animal.
The possibility that other animals in the same household can be a source of re-
infection with biting lice should be considered, and these should be treated as
necessary with an appropriate product.

Special precautions for safe use in the target species:
This veterinary medicinal product is for topical use and should not be
administered orally.
Care should be taken to avoid the contents of the tube coming into contact with
the eyes or mouth of the recipient animal.
Do not allow recently treated animals to groom each other.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
This product contains benzyl alcohol and may cause skin sensitisation or
transient skin reactions (for example, irritation, tingling).
Do not get the product on your skin or in your eyes or mouth.
If you get the product on your skin, wash it off with soap and water.
If you get the product in your eyes, wash your eyes thoroughly with clean water.

Amended pages: February 2026
If the product causes any irritation to your skin or eyes that is persistent, contact
your doctor.
If the product is swallowed, contact your doctor immediately. Do not eat, drink or
smoke whilst using this product.
Wash hands thoroughly after use.
After application, do not stroke or groom animals until application site is dry.
Special precautions for the protection of the environment:
Imidacloprid is toxic to aquatic organisms. To avoid adverse effects on aquatic
organisms, treated dogs should not be allowed to enter surface water for 48
hours after treatment.
Other precautions:
The solvent in this veterinary medicinal product may stain or damage certain
materials including leather, fabrics, plastics and finished surfaces. Allow
application site to dry before permitting contact with such materials.
interaction
No incompatibility has been observed between this veterinary medicinal product
at twice the recommended dose and the following commonly used veterinary
medicinal products: fenthion, lufenuron, milbemycin, febantel, pyrantel and
praziquantel. The compatibility of the veterinary medicinal product was also
demonstrated with a wide range of routine treatments under field conditions
including vaccination.
Do not use simultaneously with other flea products which are applied directly onto
the animal.
This veterinary medicinal product does not require any special storage conditions.
Not applicable.

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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