Product Description
Virbac EFFITIX Spot-On Solution for Large Dogs (20-40 kg)
Product Overview
EFFITIX is a topical spot-on solution manufactured by Virbac, designed for large dogs weighing between 20 kg and 40 kg . This veterinary medicine combines two active ingredients—fipronil and permethrin—to provide broad-spectrum protection against external parasites, including fleas, ticks, mosquitoes, and sandflies . Each pack contains 4 pipettes, offering a monthly supply of treatment .
Key Specifications
Key Benefits
Indications for Use
EFFITIX is indicated for the treatment and prevention of :
Dosage and Administration
Dosage: One 4.4 ml pipette per dog weighing between 20 kg and 40 kg .
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Remove the pipette from its packaging.
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Hold the pipette upright. Tap the narrow part to ensure the contents settle in the wide part.
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Break the seal at the top of the pipette along the marked line.
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Part the dog's coat until the skin is visible.
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For dogs over 20 kg, apply the solution evenly in 2 to 4 spots along the dog's back, starting from the area between the shoulder blades to the base of the tail .
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Place the tip of the pipette directly against the uncovered skin and gently squeeze several times to empty the entire contents.
Important Notes:
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Avoid bathing or water immersion for 2 days after application .
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Care should be taken to avoid excessive moistening of the hair, which may cause a sticky appearance that disappears within 24 hours .
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White deposits may be present at the application site for up to 48 hours .
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Weekly bathing may reduce the duration of flea protection to approximately 5 weeks .
Safety Information
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Do not use in puppies under 2 months of age or weighing less than 1.5 kg.
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Do not use on sick (systemic diseases, fever) or convalescing animals.
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Do not use on cats or rabbits — permethrin is highly toxic to cats and can be fatal .
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Do not use in case of hypersensitivity to the active substances or excipients.
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Avoid contact with the animal's eyes. If accidental eye contact occurs, flush immediately with plenty of water.
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Apply to an area where the animal cannot lick it off, and ensure animals do not lick each other following treatment.
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Keep treated dogs away from cats until the application site is completely dry.
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Dogs should not be allowed to swim in watercourses for 2 days after application.
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May cause mucous membrane, skin, and eye irritation.
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People with known hypersensitivity to insecticides or alcohol should avoid contact.
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Wash hands thoroughly with soap and water after handling.
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Do not smoke, drink, or eat during application.
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Treated animals should not be handled until the application site is dry. Children should not play with treated animals until the site is dry.
Adverse Reactions
Among the very rare suspected adverse reactions :
| Frequency | Reactions |
|---|---|
| Very Rare | Transient skin reactions at the application site (skin discoloration, local hair loss, itching, redness) |
| Very Rare | General itching or hair loss |
| Very Rare | Excessive salivation (if licked — due to excipients, not the active ingredient), reversible nervous signs (hyperesthesia, depression), vomiting, respiratory symptoms |


