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AVM-GSL Over the Counter Companion Animal

Quantex 20 mg Spot-on Solution

Active ingredient: Praziquantel

Form

Spot-on

Species

Cats

Manufacturer

Vetoquinol UK Limited

VMD MA No.

08007/5048

What it's used for

For the treatment of tapeworms of cats. The product is effective against mature and immature forms of also effective against

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 Praziquantel

  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

Quantex 20 mg Spot-on Solution — SPC Details

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

For the treatment of tapeworms of cats. The product is effective against mature
and immature forms of
also effective against
Dosage and Treatment Schedule
The minimum dose rate is 8 mg/kg bodyweight, which equates to 1 tube per
2.5 kg bodyweight.
BodyweightNumber of
Tubes
Quantity of
Praziquantel
mg/kg bw1 - 2.5 kg1 20 mg8 - 20>2.5 - 5 kg240 mg8 - 16>5 kg360 mgmaximum 12
Underdosing could result in ineffective use and may favour resistance
development.
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.
Part the hair on the cat's neck at the base of the skull 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. Application at the base of the skull will
minimise the opportunity for the cat to lick the product.

Revised: December 2025
MA split from NI Expiry following AN: 02274/2025
To minimise the possibility of run-off after application of more than one pipette,
it is advised that the applications should be performed slowly to allow
absorption and that it may be advisable to allow the contents of the previous
pipette to be absorbed before applying another.
Tapeworm infestation is certain to re-occur unless control of intermediate hosts
such as fleas, mice etc. is undertaken.
Flea control: flea infestations can be controlled by the regular use of effective
flea control remedies.
Mice control: if cats roam and hunt, contact with, and consumption of, mice and
subsequent re-infestation with Taenia taeniaeformis is impossible to prevent.
It is recommended to re-apply the product when signs of tapeworm infestation
re-appear or at monthly intervals.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Do not use on cats weighing less than 1 kg bodyweight.
Do not allow recently treated animals to groom each other.

Revised: December 2025
MA split from NI Expiry following AN: 02274/2025

i) Special precautions for use in animals
Care should be taken to avoid the contents of the tube coming into
contact with the eyes or mouth of the user or the recipient animal.
For external use only.
ii) Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Laboratory studies in rabbits and rats with the excipient N-methyl
pyrrolidone have shown evidence of foetotoxic effects. The veterinary
medicinal product should not be administered by pregnant women and
women suspected of being pregnant. Personal protective equipment
consisting of gloves should be worn when handling the veterinary medicinal
product by women of childbearing age.
This product can be irritant to the skin and eyes.
Care should be taken to prevent contact of the solution with the skin or
eyes.
If contact with the skin occurs, wash off any skin contamination with soap
and water immediately.
If accidental contact occurs with the eyes, flush the affected eyes
thoroughly with clean fresh water.
In the event of skin or eye contact, seek medical advice if irritation persists
and show the doctor this package.
Do not stroke or groom animals until area of application is dry (typically
around 1 hour after application).
Wash hands thoroughly after use.
Do not eat, drink or smoke during application.
Store away from food, drink or animal feedingstuffs.
iii) Other precautions
As Echinococcosis is a notifiable disease to the World Organisation for
Animal Health (OIE), specific guidelines on the treatment and follow-up,
and on the safeguard of persons, need to be obtained from the relevant
competent authority.
No incompatibility has been observed between this product at the
recommended dose and a range of common veterinary treatments.
Store away from food, drink and animal feeding stuffs.
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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