Worms in Cats: Symptoms, Treatments & How to Keep Your Cat Worm-Free

Introduction

Intestinal worms are a common yet often overlooked health issue in cats, affecting their digestive system and overall well-being. These parasites, including roundworms, hookworms, and tapeworms, can cause symptoms like vomiting, diarrhea, weight loss, and a dull coat. Early detection and treatment are essential to prevent serious complications such as anemia or malnutrition. While outdoor cats are more frequently exposed, indoor cats are not immune—worms can be transmitted through fleas, contaminated food, or soil brought in on shoes. Regular veterinary check-ups, deworming, and proper hygiene play a crucial role in keeping cats healthy and parasite-free.

What Are Cat Worms?

Cat worms refer to intestinal parasites that commonly infect cats, affecting their digestive health and overall well-being. These worms live in the gastrointestinal tract and feed off nutrients, often going unnoticed until symptoms become severe. The most common types of worms in cats include roundworms, hookworms, and tapeworms.

• Roundworms in cats are long, spaghetti-like parasites often seen in the feces or vomit of infected cats.

• Hookworms are much smaller and attach to the intestinal lining, causing blood loss and anemia.

• Tapeworms appear as flat, segmented worms; you may notice rice-like grains around your cat's anus or in bedding.

How Do Cats Get Worms?

Many pet owners ask, how do cats get worms, especially when their feline lives indoors. Cats can become infected through several common sources. Fleas are a major culprit—especially in the case of tapeworms, which cats can ingest while grooming. Contaminated soil or litter boxes may carry worm eggs or larvae, putting even indoor cats at risk. Cats that hunt or eat prey animals like rodents or birds are also highly susceptible. Additionally, kittens can get worms from their mother, either through nursing or in utero. So yes, even indoor cats need worming to stay protected from hidden sources of infection.

Symptoms of Worms in Cats

• Vomiting and diarrhoea are common signs, and may sometimes contain visible worms.

• Bloated stomach, especially in kittens, can indicate a heavy worm burden.

• Unexplained weight loss, even with a normal or increased appetite, may signal a worm infestation.

• Visible worms in faeces or around the anus, such as white, rice-like tapeworm segments or long, spaghetti-like roundworms, are clear indicators.

• These symptoms are key signs to watch for if you’re wondering "what are the signs my cat has worms?"

Worms in Kittens: What You Need to Know

Kittens are especially vulnerable to worms, often contracting them from their mother through nursing or before birth. Because their immune systems are still developing, worm infestations can lead to serious complications like severe diarrhea, anemia, malnutrition, and stunted growth. It’s important to know how often to worm kittens—veterinarians typically recommend worming at 2, 4, 6, and 8 weeks of age, then monthly until six months. Safe and effective worming treatment for kittens, including worming tablets for kittens, should always be prescribed by a vet to ensure proper dosage and safety. Early intervention is vital for healthy development.

How Often Should You Worm a Cat?

Many pet owners wonder, how often should you worm a cat—and the answer depends on the cat’s age and lifestyle. For kittens, worming should start at 2 weeks of age and continue every two weeks until 12 weeks, then monthly until six months old. Adult cats generally require worming every 3 months (4 times a year), but this can vary. Indoor cats with minimal exposure to fleas or prey animals may only need worming twice a year, while outdoor cats—who hunt or explore frequently—may need monthly deworming. Always consult a vet to tailor a schedule to your cat’s needs.

7. Cat Worming Treatment Options

• Vet-recommended dewormers are the most reliable, as they are tailored to your cat’s age, weight, and specific worm type.

• Over-the-counter treatments are available but should be chosen from trusted, reputable brands.

• Worm tablets are commonly used and often contain effective ingredients like praziquantel, pyrantel, or milbemycin.

• Spot-on treatments are a convenient alternative for cats that resist taking oral medication.

• Both options—tablets and spot-ons—are effective in eliminating common intestinal parasites in cats.

Best Dewormers for Cats: Easy & Effective Worm Treatments

Worm infestations in cats can lead to discomfort, digestive issues, and long-term health problems if untreated. Regular deworming is essential for maintaining your cat's internal health and protecting your family from zoonotic parasites. Whether you prefer the simplicity of spot-on solutions or the effectiveness of flavored tablets, here are some of the most trusted dewormers available for cats and kittens in the UK.

Bob Martin Clear Spot-On Wormer for Cats & Kittens

A hassle-free spot-on treatment specifically formulated to eliminate tapeworms, Bob Martin Clear makes worming stress-free and effective.

• Spot-on application – no pills or food mixing required

• 100% effective in killing and controlling tapeworm

• Starts working immediately after application

• Suitable for weaned cats and kittens over 1kg

• Recommended every 3 months for continuous protection

Dronspot Spot-On Worming Solution for Small Cats

Dronspot delivers vet-strength protection in an easy-to-use spot-on formula, eliminating all common intestinal worms including roundworms and tapeworms.

• Kills all common UK intestinal worms, including roundworms and tapeworms

• Spot-on, fuss-free treatment – no tablets involved

• Fast-acting and clinically proven vet-strength formulation

• Suitable from 8 weeks of age and 0.5kg bodyweight

• Available without prescription for convenient access

Beaphar WORMclear Cat Tablets

These tasty tablets are designed to make worming simple and effective by eliminating both roundworms and tapeworms in adult cats.

• Meaty-flavoured tablets for easier oral administration

• Effective against all common tapeworm species

• Kills both roundworms and tapeworms

• Suitable for adult cats – treat every 3 months

• Affordable, reliable protection from internal parasites

Drontal Wormer Tablets for Large Cats

Drontal is a powerful worming tablet specially formulated for larger cats, providing comprehensive coverage against intestinal worms.

• Eliminates all common intestinal worms in UK cats

• Specifically dosed for cats weighing over 4kg

• Can be given with or without food for easier administration

• Vet-strength active ingredients: Praziquantel & Pyrantel embonate

• Readily available without prescription for added convenience

How Long Does It Take for Worming Tablets to Work?

Pet owners often ask, how long does it take for worming tablets to work—and the answer is usually within 24 to 48 hours. Most deworming medications begin killing parasites shortly after ingestion, with dead worms typically passed in the cat’s stool during this period. After treatment, monitor your cat for signs such as lethargy, vomiting, or diarrhea, which are usually mild and temporary. You should also check for any remaining worms in the faeces over the next few days. In cases of severe infestation, a second dose may be required, so follow up with your vet as recommended.

Preventing Worms in Cats

• Maintain proper hygiene: Clean the litter box daily and disinfect food and water bowls regularly to prevent ingestion of parasite eggs.

• Control fleas effectively: Use vet-approved flea preventatives year-round, as fleas are a common source of tapeworm infections.

• Follow a regular deworming schedule: Deworm kittens as advised by a vet and continue routine deworming for adult cats every 3 months or as needed.

• Keep your cat indoors or supervised outdoors: Reducing hunting or contact with infected prey animals lowers the risk of worm exposure.

• Avoid raw meat or contaminated food: Feed only high-quality commercial cat food or properly cooked meals to prevent parasite ingestion.

FAQs

What are the signs my cat has worms?

Common signs that your cat may have worms include vomiting, diarrhea, a bloated belly, unexplained weight loss, and visible worms in the faeces or around the anus. You might also notice a dull coat, increased hunger, or lethargy. In kittens, worm infestations can lead to stunted growth and weakness.

Do indoor cats still need worming?

Yes, even indoor cats need regular worming. They can be exposed to parasites through fleas, contaminated shoes, or food, and by sharing spaces with other animals. Routine deworming is essential to maintain their health and prevent any hidden infestations, even if their exposure seems limited compared to outdoor cats.

What do cat worms look like?

Cat worms vary in appearance. Roundworms resemble spaghetti and can grow several inches long. Tapeworms appear as flat, white segments—similar to rice grains—often seen near the cat’s anus or in faeces. Hookworms are thinner and shorter, rarely visible without a microscope, but just as dangerous to your cat’s health.

Can I get worms from my cat?

Yes, some cat worms are zoonotic, meaning they can be transmitted to humans—especially children or people with weakened immune systems. Roundworms and hookworms pose the highest risk, typically through contact with contaminated faeces or soil. Practicing good hygiene and regular deworming helps reduce the risk of transmission significantly.

What is the best worming tablet for cats in the UK?

In the UK, Drontal Cat Tablets and Milbemax are among the most recommended worming treatments by vets. These tablets are effective against roundworms and tapeworms, and are easy to administer. However, the best option depends on your cat’s health and lifestyle, so consult your vet for tailored advice.