Deworming your cat: how often, what price and how to choose the right product
Published by Planète Pets · managing editor: Clément Lacaille · how our guides are written
A cat generally needs deworming four times a year if it goes outside or hunts, and twice a year if it lives strictly indoors with no contact with other animals. The format (tablet, paste or spot-on) matters less than the regularity: a skipped deworming treatment gives parasites months to settle in.
Contents · 5 sections
How often should you deworm a cat?
A kitten is dewormed more often, starting at two weeks old and then every two to four weeks until weaning, since parasites pass easily from the mother. A strictly indoor adult cat can manage with two treatments a year, while a cat that goes outside, hunts rodents or mixes with other animals needs a quarterly schedule. Your vet will adjust this frequency based on lifestyle and any stool test results.
Tablet, oral paste or spot-on: which format to choose?
- Tablet: the cheapest option, 5 to 12 € a dose, but you need to get your cat to swallow it or hide it in a treat.
- Oral paste: easier to give than a dry tablet, similar price, 6 to 13 €.
- Spot-on: applied to the skin with no need to handle the mouth, often combined with an external parasite treatment, 10 to 20 € a dose.
- Combined flea-tick-worm treatment: convenient to reduce handling, but check with your vet that it actually covers the parasites present in your area.
Should you pick the same product as an external parasite treatment?
Deworming (internal worms) and external parasite treatment (fleas, ticks) target different parasites and are not always combined in a single product. Our guide to parasite treatments for cats: spot-ons, collars, tablets covers the external options; a well-protected cat usually combines both, on separate schedules set by your vet.
How much does deworming cost over a year?
For an indoor cat with two treatments a year, budget 12 to 25 € a year. For a cat that goes outside with four treatments, the budget rises to 25 to 50 € a year depending on the format chosen. This remains a modest expense compared with an untreated infestation, which can require further tests at the vet. Find all our guides in the cat care and grooming category.
Frequently asked questions
Is a natural dewormer (garlic, herbs) effective?
No solid evidence supports these alternatives, and some plants such as garlic are toxic to cats at repeated doses. Stick with a veterinary dewormer with proven effectiveness.
My cat vomits after deworming, is this serious?
A mild, isolated digestive upset can happen, but repeated vomiting or lethargy should be reported to your vet, who can adjust the active ingredient or dosage.
Can you deworm a cat during pregnancy?
Some dewormers are suitable for pregnant or nursing cats, others are not: never treat without your vet’s approval in this situation.
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This guide is part of Planète Pets’s Cats universe. Our advice is general in nature: for any health concern, your veterinarian remains the only reference.
