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AVM-GSL Over the Counter Companion Animal

Johnson's Insecticidal Flea & Tick Drops 742 mg, Cutaneous Solution

Active ingredient: Permethrin (cis:trans 25:75)

Form

Solution

Species

Dogs

Manufacturer

Johnson's Veterinary Products Ltd

VMD MA No.

01759/5010

What it's used for

For the control of flea and tick infestations on dogs over 8 weeks of age, for a period of up to 4 weeks.

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 Permethrin (cis:trans 25:75)

  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

Johnson's Insecticidal Flea & Tick Drops 742 mg, Cutaneous Solution — SPC Details

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

For the control of flea and tick infestations on dogs over 8 weeks of age, for a
period of up to 4 weeks.
For dogs weighing over 15kg (33lb) and over 8 weeks of age:
i) Only open one vial immediately prior to use, by holding upright and
twisting the cap off, taking care not to squeeze the vial.
ii) Part the dog’s coat to expose the skin between the shoulder blades, at
the nape of the neck.
iii) Squeeze the entire contents of one vial on to the exposed skin.

Revised: December 2025
MA split from NI Expiry following AN: 02043/2025
iv) Open a second vial and apply by parting the dog’s coat at the base of
the tail, then squeeze the entire contents of the second vial on to the
exposed skin.
Re-treat after 28 days if any re-infestation is apparent.
If the dog’s coat is subsequently wetted, such as when shampooing, the 4
week period of protection may be reduced.
Not to be applied at intervals of less than 7 days.
Do not use on cats. This product is very poisonous to cats. It is important to
ensure that cats do not groom the site of application on a dog which has
been treated with this product. Seek veterinary advice immediately if this
occurs.
Do not use on dogs less than 8 weeks of age.
Potential transient localised irritation at the site of application in a small
minority of dogs – should this occur, bathe the dog with shampoo and seek
veterinary advice.
If your dog becomes unwell or shows any unusual signs of irritation, then you
should consult your veterinary surgeon taking this pack, and if possible the
vials, with you.
None.

For external use only.
Do not massage into the dog's skin.
Do not apply to the dog's fur.

Revised: December 2025
MA split from NI Expiry following AN: 02043/2025
4.5 ii) Special precautions to be taken by the person administering the medicinal
product to animals:
Avoid the drops coming into contact with your fingers.
Wash off any splashes immediately with plenty of clean water.
Avoid contact with eyes. In case of accidental eye contact, rinse with clean,
fresh water. If eye irritation persists, seek medical advice.
Wash hands and exposed skin with soap and water after use.
Users making multiple applications, such as in kennels, should wear
protective gloves (neoprene or nitrile, 0.3mm minimum thickness).
If you feel unwell as a result of handling this product, you should consult your
Doctor.
Do not handle the area of application for 6 hours following treatment.
Treated animals should not be allowed to play or sleep with people,
particularly children, for 8 hours immediately following treatment.
It is preferable to treat during the evening, when children are in bed.
Keep away from food and drink, including animal feeding stuffs.
4.5 iii) Other precautions:
Treated dogs should not be allowed to go swimming for 12 hours following
treatment.
Do not administer any other flea control products to your dog during the 4
week period of protection.
Do not store above 25ºC.
Protect from direct sunlight.
Do not freeze. Do not refrigerate.
Do not remove the vial from the pack until ready to use.
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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Related Conditions

Same active ingredient

Other Products Containing Permethrin (cis:trans 25:75)

These products share the same active ingredient and may be suitable alternatives. Always consult your vet.

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