Wormit Film-coated Tablets for Cats 16/40 mg
Active ingredients: Milbemycin Oxime (A3 and A4), Praziquantel
Form
Tablet
Species
Manufacturer
C&H Generics Ltd
VMD MA No.
40162/3009
What it's used for
The veterinary medicinal product is only indicated when use against cestodes and nematodes is indicated at the same time.
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Prescription required
Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.
Wormit Film-coated Tablets for Cats 16/40 mg — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
and nematodes is indicated at the same time.
praziquantel per kg are given once orally.
The product should be administered with or after some food. Doing so ensures
optimum protection against heartworm disease.
As per good veterinary practice, animals should be weighed to ensure accurate
dosing. Underdosing could result in ineffective use and may favour resistance
development.
Depending on the bodyweight of the cat, the practical dosing is as follows:
WeightNumber of Tablets1 – 2kg¼ tablet> 2 - 4 kg½ tablet> 4 – 8 kg1 tablet> 8 - 12 kg1½ tablets
The product can be inserted into a programme for prevention of heartworm
disease if at the same time treatment against tapeworms is indicated. The
product has a duration of heartworm prevention of one month. For regular
prevention of heartworm disease the use of a monosubstance is preferred.
The need for and frequency of re-treatment should be based on professional
advice and should take into account the local epidemiological situation and the
animal’s lifestyle.
Do not use in cases of hypersensitivity to the active substances or to any of
excipients.
See also section 3.5 “Special precautions for use”.
Very rare
(<1 animal / 10,000 animals
treated, including isolated reports):
Digestive tract disorders (such as
Diarrhoea, Emesis)
Hypersensitivity reaction
Neurological disorders (such as Ataxia
and Muscle tremor)
Systemic disorders (such as Lethargy)
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.
information and the risk of exposure of the cat should be taken into account.
The possibility that other animals in the same household can be a source of re-
infection should be considered, and these should be treated as necessary with
an appropriate veterinary medicinal product.
In the absence of risk of co-infection with nematodes and cestodes, a narrow
spectrum product should be used.
When infection with the cestode
treatment against intermediate hosts, such as fleas and lice, should be
discussed with
a veterinarian to prevent re-infection.
Special precautions for safe use in the target species
As per good veterinary practice, animals should be weighed to ensure accurate
dosing.
No studies have been performed with severely debilitated cats or individuals
with
seriously compromised kidney or liver function. The product is not
recommended for such animals or only according to a benefit/risk assessment
by the responsible veterinarian.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Accidental ingestion of the product may be harmful.
In the event of accidental ingestion of the tablets, particularly by a child, seek
medical advice immediately and show the package leaflet or the label to the
physician.
Dispose of unused tablet halves.
Wash hands after use.
Special precautions for the protection of the environment
See section 5.5.
Other precautions
Echinococcosis represents a hazard for humans. As Echinococcosis is a
notifiable disease to the World Organisation for Animal Health (WOAH), specific
guidelines on the treatment and follow-up, and on the safeguard of people need
to be obtained from the relevant competent authority.
interactions were observed when the recommended dose of the macrocyclic
lactone selamectin was administered during treatment with the product at the
recommended dose.
Although not recommended, the concomitant use of the product with a spot-on
containing moxidectin and imidacloprid at recommended dose rates following a
single application was well tolerated in one laboratory study in 10 kittens.
The safety and efficacy of the concurrent use have not been investigated in field
studies.
In the absence of further studies, caution should be taken in the case of
concurrent use of the product with any other macrocyclic lactone. Also, no such
studies have been performed with reproducing animals.
This veterinary medicinal product does not require any special temperature
storage conditions.
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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Other Products Containing Milbemycin Oxime (A3 and A4)
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Aderexa 12.5 mg/125 mg Chewable Tablets for Dogs Weighing at Least 5 kg
POM-VKRKA, d.d., Novo mesto
Aderexa 2.5 mg/25 mg Chewable Tablets for Small Dogs and Puppies Weighing at Least 0.5 kg
POM-VKRKA, d.d., Novo mesto
Alpramil 12 mg/30 mg Film-coated Tablets for Cats Weighing at Least 3 kg
POM-VAlfasan Nederland B.V.
Alpramil 12 mg/30 mg Film-coated Tablets for Cats Weighing at Least 3 kg
POM-VAlfasan Nederland B.V.
Alpramil 12.5 mg/125 mg Tablets for Dogs Weighing at Least 5 kg
POM-VAlfasan Nederland B.V.
Alpramil 12.5 mg/125 mg Tablets for Dogs Weighing at Least 5 kg
POM-VAlfasan Nederland B.V.
Alternative options to consider
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Wormers for Cats
Drontal, Milbemax, Panacur and generic wormers for cats. Pharmacy-dispensed, vet-equivalent strength.
Pet Wormers at Pharmacy2U
Drontal, Milbemax and own-brand wormers dispensed by the UK's largest online pharmacy.
VetBox Flea & Worm Protection for Cats
Vet-founded monthly parasite subscription. Flea, tick and worm protection delivered to your door. Founded by Dr Will Woodley, protecting 30,000+ pets.
We may earn a small commission if you purchase through these links, at no extra cost to you.
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