Skip to content
POM-V Prescription Required Companion Animal

Prinocate 250 mg/62.5 mg Spot-on Solution for Large Dogs

Active ingredients: Imidacloprid, Moxidectin

Form

Spot-on

Species

Dogs

Manufacturer

KRKA, d.d., Novo mesto

VMD MA No.

01656/4185

What it's used for

The prevention of heartworm disease (L3 and L4 larvae of Dirofilaria immitis, Treatment of circulating microfilariae (Dirofilaria immitis), The treatment o...

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 + Moxidectin

  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

Prinocate 250 mg/62.5 mg Spot-on Solution for Large Dogs — SPC Details

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

The prevention of heartworm disease (L3 and L4 larvae of Dirofilaria immitis,
Treatment of circulating microfilariae (Dirofilaria immitis),
The treatment of cutaneous dirofilariosis (adult stages of Dirofilaria repens),
The prevention of cutaneous dirofilariosis (L3 larvae of Dirofilaria repens),
AN: 01755/2024 & 01759/2024
The reduction of circulating microfilariae (Dirofilaria repens),
The prevention of angiostrongylosis (L4 larvae and immature adults of
Angiostrongylus vasorum),
The treatment of Angiostrongylus vasorum and ,
The prevention of spirocercosis (Spirocerca lupi
The treatment of Eucoleus Capillaria(adults),
The treatment of the eye worm Thelazia callipaeda (adults),
Treatment of infections with gastrointestinal nematodes (L4 larvae, immature adults
and adults of and Uncinaria stenocephala,
adults of Toxascaris leoninaTrichuris vulpis).
The veterinary medicinal product can be used as part of a treatment strategy for flea
allergy dermatitis (FAD).
Dosage schedule:
The recommended minimum doses are 10 mg/kg bodyweight imidacloprid and 2.5
mg/kg bodyweight moxidectin, equivalent to 0.1 ml/kg bodyweight.
The treatment schedule should be based on individual veterinary diagnosis and on
the local epidemiological situation.
Administer in accordance with the following table:
Dogs
[kg]
Pipette size to be used
Volume
[ml]
Imidacloprid
[mg/kg b.w.]
Moxidectin
[mg/kg b.w.]
>10-
imidacloprid/moxidectin 250
mg/62.5 mg spot-on solution for
large dogs
2.510-252.5-6.25
Flea treatment and prevention (Ctenocephalides felis)
One treatment prevents future flea infestation for 4 weeks. Pre-existing pupae in the
environment may emerge for 6 weeks or longer after treatment is initiated, depending
upon climatic conditions. Therefore, it may be necessary to combine treatment with
AN: 01755/2024 & 01759/2024
the veterinary medicinal product with environmental treatments aimed at breaking the
flea life cycle in the surroundings. This can result in a more rapid reduction in the
household flea population. The veterinary medicinal product should be administered
at monthly intervals when used as part of a treatment strategy for flea allergy
dermatitis.
Treatment of biting lice (Trichodectes canis)
A single dose should be administered. A further veterinary examination 30 days after
treatment is recommended as some animals may require a second treatment.
Treatment of ear mite infestation (Otodectes cynotis)
A single dose of the veterinary medicinal product should be administered. Loose
debris should be gently removed from the external ear canal at each treatment. A
further veterinary examination 30 days after treatment is recommended as some
animals may require a second treatment. Do not apply directly to the ear canal.
Treatment of sarcoptic mange (caused by Sarcoptes scabiei var. canis)
A single dose should be administered twice 4 weeks apart.
Treatment of demodicosis (caused by Demodex canis)
The administration of a single dose every 4 weeks for 2 to 4 months is efficacious
against
particularly in mild to moderate cases. Especially severe cases may require more
prolonged and more frequent treatment. To achieve the best possible response in
these severe cases, at the discretion of the veterinarian, the veterinary medicinal
product can be applied once a week and for a prolonged time. In all cases it is
essential that the treatment should be continued until skin scrapings are negative on
at least 2 consecutive monthly occasions. Treatment should be stopped in dogs that
show no improvement or do not respond in mite count after 2 months treatment.
Alternative treatment should be administered. Seek the advice of your veterinarian.
As demodicosis is a multi-factorial disease, where possible, it is advisable to also
treat any underlying disease appropriately.
Prevention of heartworm disease (D. immitis) and cutaneous dirofilariosis (skinworm)
(D. repens)
Dogs in areas endemic for heartworm, or those which have travelled to endemic
areas, may be infected with adult heartworms. Therefore prior to treatment with the
veterinary medicinal product, the advice provided in section 3.5 should be
considered. For prevention of heartworm disease and cutaneous dirofilariosis, the
veterinary medicinal product must be applied at regular monthly intervals during the
time of the year when mosquitoes (the intermediate hosts which carry and transmit D.
immitis and larvae) are present. The veterinary medicinal product may be
administered throughout the year or at least 1 month before the first expected
exposure to mosquitoes. Treatment should continue at regular monthly intervals until
1 month after the last exposure to mosquitoes. To establish a treatment routine, it is
AN: 01755/2024 & 01759/2024
recommended that the same day or date be used each month. When replacing
another heartworm preventative veterinary medicinal product in a heartworm
prevention programme, the first treatment with this veterinary medicinal product must
be given within 1 month of the last dose of the former medication. In non-endemic
areas there should be no risk of dogs having heartworm. Therefore they can be
treated without special precautions.
Treatment of microfilariae (D. immitis)
The veterinary medicinal product should be administered monthly for two consecutive
months.
Treatment of cutaneous dirofilariosis (skin worm) (adult stages of Dirofilaria repens)
The veterinary medicinal product should be administered monthly for six consecutive
months.
Reduction of microfilariae (skin worm) (D. repens)
The veterinary medicinal product should be administered monthly for four
consecutive months.
Treatment and prevention of Angiostrongylus vasorum
A single dose should be administered. A further veterinary examination 30 days after
treatment is recommended as some animals may require a second treatment. In
endemic areas regular monthly applications will prevent angiostrongylosis and patent
infection with Angiostrongylus vasorum.
Treatment of Crenosoma vulpis
A single dose should be administered.
Prevention of spirocercosis (Spirocerca lupi
The veterinary medicinal product should be administered monthly.
Treatment of Eucoleus (syn. Capillaria) boehmi (adults)
The veterinary medicinal product should be administered monthly for two consecutive
months. It is advisable to prevent auto-coprophagia between the two treatments in
order to prevent possible reinfection.
Treatment of the eye worm Thelazia callipaeda (adults)
A single dose of the veterinary medicinal product should be administered.
Roundworm, hookworm and whipworm treatment (Toxocara canis, Ancylostoma
caninum, Uncinaria stenocephala, Toxascaris leonina and Trichuris vulpis).
AN: 01755/2024 & 01759/2024
In areas endemic for heartworm, monthly treatment may significantly reduce the risk
of re-infection caused by the respective round-, hook- and whipworms. In areas non-
endemic for heartworm, the veterinary medicinal product can be used as part of a
seasonal prevention programme against fleas and gastrointestinal nematodes.
Studies have shown that monthly treatment of dogs will prevent infections caused by
Uncinaria stenocephala.
Method of administration:
1. Remove one pipette from the package. Hold applicator pipette in an upright
position, twist and pull cap off.
2. Turn the cap around and place the other end of cap back on pipette. Push and
twist the cap to break seal, and then remove the cap from the pipette.
3. With the dog standing still, part the coat between the shoulder blades until the
skin is visible. The product should only be applied to undamaged skin. Place the
tip of the pipette on the skin and squeeze firmly several times to empty the
contents directly onto the skin.
Do not use in puppies under 7 weeks of age.
Do not use in cases of hypersensitivity to the active substances or to any of the
excipients.
Do not use in dogs classified as Class 4 for heartworm disease as the safety of the
veterinary medicinal product has not been evaluated in this animal group.
For cats, the corresponding veterinary medicinal product (0.4 or 0.8 ml), which
contains 100 mg/ml imidacloprid and 10 mg/ml moxidectin, must be used.
For ferrets: Do not use the veterinary medicinal product for dogs. Only the veterinary
medicinal product for small cats and ferrets (0.4 ml) should be used.
Do not use on canaries.
Dogs:
Common
(1 to 10 animals / 100 animals
treated):
Diarrhoea
, Vomiting
Cough
, Dyspnoea
, Tachypnoea
Inappetence
, Lethargy
Rare
(1 to 10 animals / 10,000
animals treated):
Vomiting
Application site greasy fur
, Application site
erythema
, Hypersensitivity reaction
Very rare
(<1 animal / 10,000 animals
treated, including isolated
reports):
Behavioural disorders (e.g. agitation)
Inappetence
, Lethargy
Neurological signs
Undetermined frequency
(cannot be estimated from the
available data):
Pruritus
Hypersalivation
1
These signs are common in heartworm positive dogs with microfilaraemia. In a case
of severe respiratory signs (cough, dyspnoea, tachypnoea) prompt veterinary
treatment may be required.
These signs disappear without further treatment.
Local.
Transiently noted and related to sensation at application site.
Most occur transiently and if animal licks the application site after treatment (see
section 3.10).
Transient.
Occurs if the animal licks the application site immediately after treatment. This is not
a sign of intoxication and disappears within minutes without treatment. Correct
application will minimise licking of the application site.
AN: 01755/2024 & 01759/2024
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 its local representative or the national
competent authority via the national reporting system. See the package leaflet for
respective contact details.
Brief contact of the animal with water on one or two occasions between monthly
treatments is unlikely to significantly reduce the efficacy of the veterinary medicinal
product. However, frequent shampooing or immersion of the animal in water after
treatment may reduce the efficacy of the veterinary medicinal product.
Parasite resistance to any particular class of anthelmintic may develop following
frequent, repeated
use of an anthelmintic of that class. Therefore, the use of this veterinary medicinal
product should be based on the assessment of each individual case and on local
epidemiological information about the current susceptibility of the target species in
order to limit the possibility of a future selection for resistance.
The use of the veterinary medicinal product should be based on the confirmed
diagnosis of mixed infection (or risk of infection, where prevention applies) at the
same time (see also sections 3.2 and 3.9). Efficacy against adult Dirofilaria repens
has not been tested under field conditions.

Special precautions for safe use in the target species:
The treatment of animals weighing less than 1 kg should be based on a benefit-risk
assessment.
AN: 01755/2024 & 01759/2024
There is limited experience on the use of the veterinary medicinal product in sick and
debilitated animals, thus the veterinary medicinal product should only be used based
on a benefit-risk assessment for these animals.
Care should be taken that the contents of the pipette or the applied dose does not
come into contact with the eyes or mouth of the recipient and/or other animals. Do
not allow recently treated animals to groom each other.
The veterinary medicinal product should only be applied to undamaged skin.
This veterinary medicinal product contains moxidectin (a macrocyclic lactone),
therefore special care should be taken with Collie or Old English Sheep dogs and
related breeds or crossbreeds, to correctly administer the veterinary medicinal
product as described under section 3.9; in particular, oral uptake by the recipient
and/or other animals in close contact should be prevented.
The safety of the veterinary medicinal product has only been evaluated in dogs
classified as either Class 1 or 2 for heartworm disease in laboratory studies and in a
few Class 3 dogs in a field study. Therefore the use in dogs with obvious or severe
symptoms of the disease should be based on a careful benefit-risk assessment by
the treating veterinarian.
Although experimental overdosage studies have shown that the veterinary medicinal
product may be safely administered to dogs infected with adult heartworms, it has no
therapeutic effect against adult Dirofilaria immitis. It is therefore recommended that all
dogs 6 months of age or more, living in areas endemic for heartworm, should be
tested for existing adult heartworm infection before being treated with the veterinary
medicinal product. At the discretion of the veterinarian, infected dogs should be
treated with an adulticide to remove adult heartworms. The safety of the combination
of imidacloprid and moxidectin has not been evaluated when administered on the
same day as an adulticide.
Imidacloprid is toxic for birds, especially canaries.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
In order to prevent children from getting access to pipettes, keep the pipette in the
original packaging until ready for use and dispose of used pipettes immediately.
Do not ingest. In case of accidental ingestion, seek medical advice immediately and
show the package leaflet or the label to the physician.
People with known hypersensitivity to benzyl alcohol, imidacloprid or moxidectin
should administer the veterinary medicinal product with caution. In very rare cases
the veterinary medicinal product may cause skin sensitisation or transient skin
reactions (for example numbness, irritation or burning/tingling sensation).
In very rare cases the veterinary medicinal product may cause respiratory irritation in
sensitive individuals.
If the veterinary medicinal product accidentally gets into eyes, they should be
thoroughly flushed with water.
Avoid contact with skin, eyes or mouth.
In case of accidental spillage onto skin, wash off immediately with soap and water.
Wash hands thoroughly after use.
If skin or eye symptoms persist, seek medical advice immediately and show the
package leaflet or the label to the physician.
Do not eat, drink or smoke during application.
AN: 01755/2024 & 01759/2024
Treated animals should not be handled especially by children until the application site
is dry. Therefore, it is recommended to apply the veterinary medicinal product in the
evening. Recently treated animals should not be allowed to sleep in the same bed as
their owner, especially children.
Special precautions for the protection of the environment:
The veterinary medicinal product should not enter water courses as it has harmful
effects on aquatic organisms: moxidectin is highly toxic to aquatic organisms. Dogs
should not be allowed to swim in surface waters for 4 days after treatment.
Other precautions:
The solvent in the veterinary medicinal product may stain or damage certain
materials including leather, fabrics, plastics and finished surfaces. Allow the
application site to dry before permitting contact with such materials.
During treatment with the veterinary medicinal product no other antiparasitic
macrocyclic lactone should be administered. No interactions between
imidacloprid/moxidectin combination and routinely used veterinary medicinal
products or medical or surgical procedures have been observed. Safety of the
veterinary medicinal product when administered on the same day as an adulticide to
remove adult heartworms has not been evaluated.
Store in the original package in order to protect from light and moisture. This
veterinary medicinal product does not require any special temperature 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.

Medication costs adding up?

Pet insurance can cover prescription medications. Find the right policy for your pet.

Compare insurance

Find cheaper vets near you

Compare vet consultation prices in your area. Save on procedures and get a prescription to buy medications online.