Keeping your cat protected from worms is one of the simplest ways to maintain their long‑term health. Worms are extremely common in cats of all ages, and even indoor cats can be affected. In this guide, we look at the most trusted worming treatment brands in the UK, how they work, and how often your cat should be treated.
What Are Worms in Cats?
Worms are internal parasites that live in your cat’s intestines. The most common types are roundworms, tapeworms and hookworms. While many cats show no obvious symptoms at first, untreated worms can lead to weight loss, digestive issues and a dull coat.
Signs Your Cat Might Have Worms
Common symptoms include:
• A bloated tummy
• Weight loss despite normal eating
• Visible worms or “rice‑like” segments near the tail
• Vomiting or diarrhoea
• Increased hunger
• A dull or poor‑quality coat If you notice any of these signs, it’s worth speaking to your vet.
Different Types of Worming Treatments
There are three main types of worming treatments available in the UK:
• Spot‑on treatments – applied to the back of the neck
• Tablets – given directly or hidden in food
• Liquid treatments – useful for cats who refuse tablets
Popular Worming Treatment Brands in the UK
Stronghold / Stronghold Plus
A spot‑on treatment that protects against roundworms, hookworms, fleas and ear mites. Stronghold Plus also covers ticks.
Drontal
One of the most popular tablet wormers. Effective against roundworms and tapeworms.
Milbemax
A small, easy‑to‑swallow tablet suitable for adult cats and kittens.
Profender
A spot‑on treatment that covers roundworms, hookworms and tapeworms.
Panacur
Available as a liquid or paste. Often used for kittens or cats who struggle with tablets.
How Often Should You Worm Your Cat?
Most adult cats should be wormed every 3 months. Kittens usually need more frequent treatment — often every 2 weeks up to 12 weeks old, then monthly until 6 months. Always follow your vet’s advice for your cat’s age and lifestyle.
Indoor vs Outdoor Cats
Outdoor cats are at higher risk because they hunt, eat grass and come into contact with other animals. Indoor cats still need regular worming because: • Worm eggs can be brought in on shoes • Fleas (which carry tapeworm) can enter the home • Cats may have been exposed before adoption
When to Speak to a Vet
Contact your vet if:
• Your cat has persistent diarrhoea
• You see worms in their stool
• Your cat is losing weight
• You’re unsure which treatment is best
Can Humans Catch Worms from Cats?
Certain worms can occasionally be passed to people, particularly children who come into contact with contaminated soil or litter trays. Good hygiene, regular worming and prompt disposal of cat faeces help minimise the risk.
Do Indoor Cats Need Worming?
Many owners assume indoor cats are safe from worms, but parasites can still find their way into the home. Fleas can carry tapeworm, while worm eggs can be brought indoors on shoes and clothing. Even cats that never go outside should follow a suitable worming programme.
Are Over-the-Counter Wormers as Good as Prescription Treatments?
Many over-the-counter wormers can be effective against common worms. However, prescription products from your veterinary practice may offer broader protection and may also cover external parasites such as fleas, mites or ticks.
Which Worming Treatment Is Best?
The best treatment depends on:
Your cat's age
Whether they go outdoors
Hunting habits
Other pets in the household
Medical history
Your vet can recommend the most appropriate product for your cat's lifestyle
Boarding Requirements at Cat'll Do Nicely
At Cat'll Do Nicely, we regularly remind owners about the importance of keeping flea and worm treatments up to date before boarding. While many cats arrive well protected, we occasionally speak to owners who are unsure when treatments were last administered. Keeping a simple treatment record can help ensure your cat remains protected throughout the year.
Related Cat Care Guides
Learn more about preparing your cat for boarding in our Using a Cattery Guide
Read more about our approach to cat care at Cat’ll Do Nicely