Seeing worms in your cat’s stool does not tell you which medicine to buy. Roundworms, hookworms, and tapeworms require different active ingredients, and some products treat only one parasite group.
The term Elanco cat dewormer can refer to several products, including an over-the-counter tapeworm tablet, broad-spectrum Drontal tablets, prescription Profender topical solution, and monthly Advantage Multi. The right choice depends on the parasite, your cat’s age and weight, treatment format, and whether ongoing prevention is needed.
At a Glance: Elanco offers several cat deworming options. Tapeworm Dewormer contains praziquantel for common tapeworms. Drontal combines praziquantel and pyrantel for tapeworms, roundworms, and hookworms. Profender treats the same major intestinal worm groups through a prescription topical. Advantage Multi provides monthly protection against roundworms, hookworms, heartworms, fleas, and ear mites.
Which Worms Commonly Infect Cats?
Roundworms
Roundworms are long, pale worms that may resemble spaghetti. Cats can become infected by swallowing parasite eggs from contaminated soil or litter, grooming contaminated fur, or eating infected rodents.
Kittens may develop:
- A swollen belly
- Poor growth
- Vomiting
- Diarrhea
- Dull coat
- Reduced appetite
Some cats carry roundworms without obvious signs. Roundworm eggs are usually identified through microscopic examination of a stool sample.
Hookworms
Hookworms attach to the intestinal lining and feed on blood. Cats may become infected after swallowing larvae or when larvae penetrate the skin.
Possible signs include diarrhea, weight loss, poor coat condition, weakness, and dark or bloody stool. Young or heavily infected cats may develop anemia.
CAPC recommends testing kittens for intestinal parasites at least four times during their first year and testing adult cats at least twice yearly, depending on health and lifestyle risks.
Tapeworms
Tapeworm segments often look like small grains of rice around the anus, on bedding, or on fresh stool.
Cats develop the common flea tapeworm, Dipylidium caninum, after swallowing an infected flea. They may acquire Taenia taeniaeformis by eating infected rodents.
A tapeworm treatment may remove the current infection, but fleas or hunting behavior can cause another infection quickly.
Elanco Cat Dewormer Options Compared
| Product | Active Ingredients | Parasites Covered | Form and Access |
| Tapeworm Dewormer for Cats | Praziquantel | Two common tapeworms | Over-the-counter tablet |
| Drontal for Cats | Praziquantel and pyrantel pamoate | Tapeworms, hookworms, and large roundworms | Broad-spectrum oral tablet |
| Profender for Cats | Emodepside and praziquantel | Tapeworms, hookworms, and roundworms | Prescription topical |
| Advantage Multi for Cats | Imidacloprid and moxidectin | Roundworms, hookworms, heartworms, fleas, and ear mites | Monthly prescription topical |
These products do not have identical coverage. A cat with tapeworms may need praziquantel, while a cat with both roundworms and hookworms needs broader protection.
Elanco Tapeworm Dewormer for Cats
Elanco Tapeworm Dewormer for Cats contains 23 mg of praziquantel per tablet. It treats Dipylidium caninum and Taenia taeniaeformis in cats and kittens at least six weeks old.
The labeled dosage is:
| Cat’s Weight | Number of Tablets |
| 4 pounds or less | ½ tablet |
| 5 to 11 pounds | 1 tablet |
| More than 11 pounds | 1½ tablets |
The tablet may be placed directly in the mouth or crumbled into a small amount of food. Fasting before or after treatment is not required.
This product is a focused choice when common tapeworms are the only concern. It does not remove roundworms or hookworms.
Do not substitute Elanco Tapeworm Dewormer for Dogs for the cat tablets. The dog product contains 34 mg of praziquantel per tablet and follows a different weight chart. Similar packaging does not mean the tablets are interchangeable.
Drontal Broad-Spectrum Dewormer for Cats
Drontal contains two active ingredients per tablet:
- 18.2 mg praziquantel
- 72.6 mg pyrantel base as pyrantel pamoate
It removes the common tapeworms Dipylidium caninum and Taenia taeniaeformis, the hookworm Ancylostoma tubaeforme, and the large roundworm Toxocara cati.
The current label lists the following dosage:
| Cat’s Weight | Number of Tablets |
| 2 to 3 pounds | ½ tablet |
| 4 to 8 pounds | 1 tablet |
| 9 to 12 pounds | 1½ tablets |
| 13 to 16 pounds | 2 tablets |
Drontal should not be used in kittens younger than two months or weighing less than two pounds. It can be given directly or placed in a small amount of food, and food should not be withheld before or after treatment.
Drontal may make sense when stool testing or veterinary evaluation suggests more than one common intestinal worm. The label advises consulting a veterinarian before giving it to sick or pregnant cats.
Profender Topical Dewormer for Cats
Profender is a prescription topical solution containing emodepside and praziquantel. It treats adult tapeworms plus adult and immature roundworms and hookworms.
The solution is applied to visible skin at the back of the neck, which may be easier for cats that refuse tablets. One application is designed to treat the existing infection, although reinfection may require another treatment after 30 days.
Profender comes in three weight ranges:
- Small: 2.2 to 5.5 pounds
- Medium: over 5.5 to 11 pounds
- Large: over 11 to 17.6 pounds
Cats must be at least eight weeks old and weigh at least 2.2 pounds. A veterinarian should calculate the correct combination of tubes for cats weighing more than 17.6 pounds.
Apply the entire tube directly to the skin rather than on top of the fur. Keep children away from the application site for 24 hours, and follow all veterinary and label instructions.
Advantage Multi for Monthly Parasite Protection
Advantage Multi is not simply a one-time intestinal dewormer. It is a monthly prescription topical containing imidacloprid and moxidectin.
For cats, it:
- Treats and controls roundworms
- Treats and controls hookworms
- Prevents heartworm disease
- Kills fleas
- Treats ear mites
It does not provide the same tapeworm treatment as a praziquantel-containing product. A cat with visible tapeworm segments may still need a separate tapeworm medicine.
This product may suit cats that need monthly protection against several parasites, especially when giving oral tablets is difficult.
How to Choose the Correct Elanco Cat Dewormer
Identify the Parasite First
Do not select a dewormer based only on diarrhea, vomiting, or weight loss. These signs can result from diet changes, infections, inflammatory disease, toxins, or other medical problems.
Take a fresh stool sample to your veterinarian when requested. Tapeworm infections may sometimes be identified through visible segments, while roundworms and hookworms often require microscopic testing.
Weigh Your Cat Accurately
Dewormer dosing depends on body weight. Guessing may lead to an incomplete dose or unnecessary medication.
Weigh kittens before each treatment because their weight changes quickly. Cats that fall exactly between package ranges should be dosed according to the current label or veterinary direction.
Check Every Active Ingredient
Never combine two parasite products simply because they have different brand names.
For example, a broad-spectrum tablet and a topical product may both contain praziquantel or provide overlapping intestinal parasite coverage. Your veterinarian should review all medicines before products are combined.
Consider the Cat’s Health and Age
Speak with a veterinarian before treating a cat that is:
- Pregnant or nursing
- Weak or underweight
- Dehydrated
- Vomiting repeatedly
- Living with kidney or liver disease
- Taking other medication
- Younger than the product’s minimum age
Young kittens may need a veterinary deworming schedule that begins before they are old enough for certain retail products.
Preventing Worms From Returning
Treatment does not create permanent immunity. Cats can become infected again soon after successful deworming.
CAPC recommends year-round broad-spectrum parasite control and regular stool testing based on age, health, and lifestyle. Kittens should begin routine parasite treatment early and move to an effective ongoing preventive program.
Reduce reinfection by:
- Removing stool and soiled litter daily
- Washing litter boxes regularly
- Controlling fleas on every pet
- Cleaning bedding and resting areas
- Preventing hunting when possible
- Storing pet food securely
- Blocking rodent entry points
- Scheduling regular veterinary stool tests
Tapeworms spread through fleas and prey animals, while roundworm and hookworm eggs or larvae may remain in contaminated environments.
Possible Side Effects
Reported reactions vary by product.
Tapeworm Dewormer may occasionally cause drooling or diarrhea. Drontal labeling lists uncommon effects such as temporary appetite loss, loose stool, or transient loss of coordination. Profender may cause temporary licking, salivation, vomiting, or irritation at the application site.
Contact a veterinarian promptly if your cat develops:
- Repeated vomiting
- Severe diarrhea
- Facial swelling
- Trouble breathing
- Extreme weakness
- Tremors or seizures
- Collapse
- Persistent loss of appetite
- Difficulty walking
Do not repeat a dose after vomiting unless a veterinarian tells you how to proceed.
Frequently Asked Questions
Which Elanco Cat Dewormer Treats the Most Worms?
Drontal and Profender both treat common tapeworms, roundworms, and hookworms. Drontal is an oral tablet, while Profender is a prescription topical applied to the skin.
Does Elanco Tapeworm Dewormer Treat Roundworms?
No. Elanco Tapeworm Dewormer for Cats contains praziquantel and treats two common tapeworm species. It does not treat roundworms or hookworms.
Can I Use Elanco Tapeworm Dewormer for Dogs on a Cat?
No. The dog and cat tablets contain different amounts of praziquantel and use different dosage charts. Always use the product labeled for the correct species.
How Often Should I Deworm My Cat?
The schedule depends on age, lifestyle, parasite exposure, and current preventive medicine. CAPC recommends frequent testing during the first year and ongoing year-round parasite control selected with a veterinarian.
Why Does My Cat Keep Getting Worms?
Reinfection may occur through fleas, rodents, contaminated soil, infected prey, or contact with parasite eggs in the environment. Successful treatment must be paired with flea control, litter hygiene, and reduced hunting exposure.