# Does Drontal Treat Tapeworms in Cats? Yes, Drontal for cats tapeworm treatment works. The praziquantel in Drontal kills adult tapeworms in your cat's intestine, usually after a single dose. It does not prevent reinfection, so flea control matters just as much as the dewormer itself. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Drontal contains praziquantel, which is approved to treat the most common tapeworms in cats, including Dipylidium caninum and Taenia species [1]. - Cats get Dipylidium caninum by swallowing infected fleas during grooming, so treating the tapeworm without treating the fleas leads to repeat infections [1]. - A veterinarian calculates the Drontal dose from your cat's weight, so never split or guess a dose on your own. - Most cats need only one treatment, but if fleas remain in the home, tapeworms come back. - Tapeworms are not the only worm that can infect your cat, and some worms need different drugs, so a fecal test helps your vet choose the right product. ## What Drontal Is and What Veterinarians Use It For Drontal is a deworming product for cats that combines praziquantel with other drugs, depending on the exact formulation. Praziquantel is the ingredient that targets tapeworms. It is approved for treating Echinococcus species in dogs, and it is widely used in cats for the tapeworms that most commonly infect them [1]. The two tapeworms you are most likely to see in a pet cat are Dipylidium caninum, also called the double-pored dog tapeworm, and Taenia taeniaeformis. Cats pick up Dipylidium caninum by eating fleas while grooming, and they pick up Taenia taeniaeformis by eating infected mice or rats [1]. Both are treated with praziquantel. Veterinarians use Drontal for cats tapeworm infections because it works quickly and is easy to give. Many cats clear the infection after a single dose. Your vet may also use a praziquantel product that covers other parasites at the same time, such as a topical formula that treats fleas and mites along with tapeworms [2][3]. If your cat has roundworms instead of tapeworms, Drontal may not be the right choice on its own. Roundworms need a different drug, and you can read more about that in [Roundworm Treatment For Cats](/knowledge/veterinary-medicine/parasitic-diseases/roundworm-treatment-for-cats). If you are not sure which worm your cat has, a veterinarian can identify it from a stool sample or from segments you find near the tail. ## How Praziquantel Kills Tapeworms in Cats Praziquantel works by damaging the tapeworm's outer layer. The worm loses its grip on the intestinal wall and is passed out in the stool. This happens fairly fast, often within a day or two of treatment. The drug acts on the adult tapeworm living in the small intestine [1]. It does not kill the larval stage that lives inside fleas or mice, which is why reinfection is always possible. If your cat swallows another infected flea next week, a new tapeworm can grow. This is the single most important thing to understand about tapeworm treatment in cats. The dewormer clears the worm your cat has now. Flea control stops the next one. For a broader look at the options, see [Tapeworm Medicine For Cats](/knowledge/veterinary-medicine/parasitic-diseases/tapeworm-medicine-for-cats). ## Drontal Cat Tapeworm Dose: What Owners Should Know ### Who decides the dose Your veterinarian decides the dose. Praziquantel is dosed by body weight, and the right amount for a 6-pound kitten is not the right amount for a 14-pound adult. Your vet also factors in your cat's age, pregnancy status, other medications, and overall health. Do not use a dog product on a cat. Do not cut a tablet based on a guess. If you are unsure, call your vet's office and ask them to confirm the dose for your cat's current weight. ### How it is given Drontal for cats is usually given by mouth as a tablet or as a paste. Some cats take it in a small amount of food. Others need it placed directly in the mouth. Follow the instructions your veterinarian gives you, and give the full dose even if your cat seems fine. ### Missed dose If you miss a dose, contact your veterinarian for guidance. Do not double up to make up for it. In most cases, a single treatment is enough for tapeworms, so a missed follow-up dose matters less than a missed first dose. Your vet will tell you whether another treatment is needed. ### What to expect afterward You may see dead tapeworm segments in the stool or stuck to the fur around the tail in the days after treatment. That is normal. Tapeworm segments look like small grains of rice or sesame seeds when they dry out. ## Side Effects of Drontal in Cats Most cats tolerate praziquantel well. When side effects happen, they are usually mild and short lived. | Side effect | How common or serious | What to do | |---|---|---| | Vomiting | Uncommon, usually mild | Withhold food for a short time, offer water, call your vet if it repeats | | Diarrhea | Uncommon, usually mild | Keep water available, call your vet if it lasts more than a day | | Drooling or lip smacking | Common right after a tablet, not serious | Offer water, it usually passes quickly | | Sleepiness | Uncommon, mild | Let your cat rest, call your vet if it lasts more than a day | | Loss of appetite | Uncommon, mild | Offer small meals, call your vet if your cat refuses food for 24 hours | | Trouble walking, tremors, twitching | Rare, serious | Call your veterinarian right away | | Swelling of the face, hives, trouble breathing | Rare, emergency | Go to an emergency clinic now | A study of a topical product containing praziquantel in cats found it was well tolerated and safe for treating external parasites [2]. That supports what veterinarians see in practice, which is that praziquantel is generally gentle on cats. If your cat has a reaction you did not expect, do not wait it out if the signs are severe. Call your vet or an animal poison control service. ## Who Should Not Take Drontal and What Interacts With It Drontal is not right for every cat. Tell your veterinarian if any of these apply. - Your cat is pregnant or nursing. Your vet will decide whether treatment can wait. - Your cat is a young kitten. Age and weight limits apply, and your vet sets them. - Your cat has liver or kidney disease. The drug still may be safe, but your vet needs to know. - Your cat is already taking another dewormer. Stacking products can lead to an accidental overdose. - Your cat has had a reaction to praziquantel before. Drug interactions with praziquantel are not well established in veterinary research for cats. That does not mean none exist. It means your veterinarian should review everything your cat takes, including flea products, supplements, and prescription drugs, before giving Drontal. One practical point: many flea products already contain praziquantel [3][4]. If your cat is on one of those, adding a separate tapeworm tablet can double the dose. Always tell your vet what you are already using. ## Overdose and When to Call for Help An overdose of praziquantel can cause vomiting, drooling, wobbliness, or tremors. If you think your cat got too much, call your veterinarian or an animal poison control service right away. Have the product name, the strength, and your best estimate of how much your cat swallowed. Do not wait for symptoms to appear before you call. Early advice is easier to act on than a cat who is already sick. If your cat collapses, has a seizure, or has trouble breathing, go to an emergency clinic immediately. ## Flea Control Is the Other Half of Tapeworm Treatment This is where many owners get stuck. You treat the tapeworm, your cat feels better, and three weeks later you see those rice-like segments again. The reason is almost always fleas. Cats become infected with Dipylidium caninum by ingesting fleas during grooming [1]. That means every flea your cat swallows is a chance for a new tapeworm. Killing the worm without killing the fleas is a loop that never ends. Good flea control includes treating every pet in the home, not just the one with tapeworms. It also means treating the environment. Flea eggs and larvae live in carpets, bedding, and cracks in the floor. Wash bedding in hot water, vacuum often, and empty the vacuum canister outside. Flea products that contain praziquantel do double duty. They kill fleas and treat tapeworms at the same time [3]. A topical formula combining fipronil, moxidectin, and praziquantel was highly effective against several feline parasites, reaching full efficacy within three days in one study [2]. Another topical combination of ivermectin, imidacloprid, and praziquantel was evaluated for flea control in cats under routine clinic conditions [3]. Your veterinarian can help you pick a product that fits your cat's lifestyle and health. If your cat hunts mice or rats, flea control alone will not stop Taenia taeniaeformis. That tapeworm comes from eating infected rodents [1]. Keeping your cat indoors is the most reliable way to prevent it. ## Limitations and When to Contact a Veterinarian Drontal treats tapeworms. It does not treat every parasite, and it does not prevent reinfection. That is the main limitation to keep in mind. Call your veterinarian the same day if: - Your cat vomits after treatment or refuses food for more than 24 hours. - You see tapeworm segments again within a few weeks of treatment. - Your cat has diarrhea that lasts more than a day. - You are not sure the dose was correct. Go to an emergency clinic now if: - Your cat has a seizure, tremors, or cannot stand. - Your cat has trouble breathing or swelling around the face. - Your cat collapses or seems unresponsive. Schedule a routine visit if: - You see rice-like segments near your cat's tail or in the stool. - Your cat has fleas and you need a prevention plan. - Your cat has not had a fecal test in the past year. - You have other pets in the home and want to treat everyone at once. Individual cases need a veterinarian. A cat with tapeworms may also have roundworms, fleas, or another condition that changes the treatment plan. For a full picture of treatment options, see [Treatment For Tapeworm In Cats](/knowledge/veterinary-medicine/parasitic-diseases/treatment-for-tapeworm-in-cats). ## Frequently Asked Questions ### Does Drontal kill tapeworms in cats? Yes. Praziquantel, the tapeworm-active ingredient in Drontal, kills the adult tapeworms that live in your cat's small intestine. Most cats clear the infection after one treatment. The catch is that it does not stop your cat from getting tapeworms again. ### How fast does Drontal work on tapeworms? Most cats pass the dead worm within a day or two of treatment. You may see segments in the stool or stuck to the fur near the tail during that time. If you still see segments a week later, call your veterinarian. ### Can I buy Drontal for cats over the counter? In the United States, dewormers for cats are often sold through veterinarians or with a prescription. Some products are available without one, but the dose still depends on your cat's weight. Your veterinarian is the best person to confirm what your cat needs. ### Do I need to treat my other pets if one cat has tapeworms? Yes, if fleas are the source. Every pet in the home can carry fleas, and fleas are what pass Dipylidium caninum to cats. Treat all pets and the home environment at the same time. Your veterinarian can set up a plan for the whole household. ### Can tapeworms in cats go away on their own? No. Tapeworms do not clear on their own, and they keep producing segments that you will see around your cat's tail. Treatment plus flea control is what ends the cycle. If you are unsure whether your cat has tapeworms or another worm, ask your vet for a fecal test. ## Related Articles - [Tapeworm Medicine For Cats](/knowledge/veterinary-medicine/parasitic-diseases/tapeworm-medicine-for-cats) - [Treatment For Tapeworm In Cats](/knowledge/veterinary-medicine/parasitic-diseases/treatment-for-tapeworm-in-cats) - [How To Treat Ringworm At Home Cats](/knowledge/veterinary-medicine/parasitic-diseases/home-remedies-for-cats-ringworm-infection) - [Roundworm Treatment For Cats](/knowledge/veterinary-medicine/parasitic-diseases/roundworm-treatment-for-cats) - [How To Treat Ringworm At Home In Cats](/knowledge/veterinary-medicine/parasitic-diseases/home-remedies-for-cats-ringworm-infection) - [How To Treat Ringworm At Home For Cats](/knowledge/veterinary-medicine/parasitic-diseases/home-remedies-for-cats-ringworm-infection) - [Drontal for Cats: Side Effects and What to Expect](/knowledge/veterinary-medicine/pet-medication-guide/drontal-for-cats-side-effects) - [Drontal for Cats Instructions: How to Give It Safely](/knowledge/veterinary-medicine/pet-medication-guide/drontal-for-cats-instructions) - [Drontal for Cats: Dosage, Schedule, and How Often](/knowledge/veterinary-medicine/parasitic-diseases/drontal-for-cats-dosage) - [Dipylidium caninum Flea Tapeworm in Dogs and Cats: Lifecycle, Clinical Signs, and Flea Control](/knowledge/parasites/pet-parasites/dipylidium-caninum-flea-tapeworm-dogs-cats-fleas-lifecycle) - [Taenia taeniaeformis Tapeworm Infection in Cats: Rodent Intermediate Host and Clinical Management](/knowledge/parasites/pet-parasites/taenia-taeniaeformis-cats-rodent-tapeworm-intermediate-host) ## References 1. [Tapeworms in Dogs and Cats - Digestive System](https://www.merckvetmanual.com/digestive-system/gastrointestinal-parasites-of-small-animals/tapeworms-in-dogs-and-cats). Merck Veterinary Manual. 2. [Efficacy of a single-dose topical formulation combining Fipronil, Moxidectin and Praziquantel against natural infestations of Notoedres cati, Otodectes cynotis and Felicola subrostratus in cats](https://pubmed.ncbi.nlm.nih.gov/41983805/). Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria, 2026. 3. [Field evaluation of a topical combination of ivermectin, imidacloprid, and praziquantel for flea control in cats under routine clinical](https://pubmed.ncbi.nlm.nih.gov/41822165/). Frontiers in parasitology, 2026. 4. [Efficacy of NexGard® combo (esafoxolaner-eprinomectin-praziquantel) against natural Mammomonogamus ierei infection in cats](https://pubmed.ncbi.nlm.nih.gov/42034956/). Veterinary parasitology, regional studies and reports, 2026. ## Further Reading - [American Veterinary Medical Association: First Aid Tips for Pet Owners](https://www.avma.org/resources-tools/pet-owners/emergencycare/first-aid-tips-pet-owners) - [Merck Veterinary Manual: Cat Owners](https://www.merckvetmanual.com/cat-owners) - [Cornell Feline Health Center: Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information)