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Drontal (Canada)

This page contains information on Drontal for veterinary use.
The information provided typically includes the following:
  • Drontal Indications
  • Warnings and cautions for Drontal
  • Direction and dosage information for Drontal


This treatment applies to the following species:
Company: Bayer


Broad Spectrum Anthelmintic Tablets for Cats

DIN 02169495


Drontal (praziquantel/pyrantel pamoate) tablets are scored for easy breakage. Each tablet contains 18.2 mg praziquantel, 72.6 mg pyrantel base as pyrantel pamoate.

Directions For Use

Drontal (praziquantel/pyrantel pamoate) Broad Spectrum Wormer tablets will remove Tapeworms (Dipylidium caninum, Taenia taeniaeformis), Hookworms (Ancylostoma tubaeforme) and Large Roundworms (Toxocara cati), in kittens and cats.

The presence of tapeworms is indicated by the observance of tapeworm segments passed in the cat's feces. Tapeworm segments are white, pinkish-white or yellow-white in colour and are similar in size and shape to flattened grains of rice. The segments are most frequently observed lying on a freshly passed stool. Segments may also be found on the hair around the anus of the animal, or on the animal's bedding. Cats become infected with tapeworms after eating fleas or small animals (mice and other rodents) which may be infected with tapeworm larvae.

Hookworms are small whitish or reddish-brown worms less than one inch in length that live in the intestinal tract and feed on blood. Cats can become infected with hookworms by swallowing infective larvae while grooming or when larvae from the environment burrow through the skin. Cats infected with hookworms may have poor physical condition, dull haircoat, reduced body weight and diarrhea, sometimes with the presence of dark blood.

Large roundworms are white or yellow-white strands 2-7 inches in length (similar in size and colour to smooth strings of spaghetti) that may be observed in the cat's vomit or feces. Cats become infected with large roundworms by swallowing infective eggs, particularly while grooming, or by ingestion of mice that may be infected with larval stages.

Large roundworms and hookworms pass eggs in the feces of the cat that can only be observed with the aid of a microscope.

The presence of these parasites should be confirmed through identification of parasite eggs in the feces.

Large roundworms and hookworms may be observed in the feces of the cat a day or so after the cat has been treated with Drontal Tablets. The majority of tapeworms, however, are digested and are not found in the feces after treatment.

Dosage and Adminisration:

To assure proper dosage, weigh the cat prior to treatment. Select the number of whole or 1/2 tablets needed for the cat from the following table.

Dosage Chart

Drontal Tablets For Cats

Body Weight

No. of Tablets




2 - 3


2 - 3

4 - 8


4 - 5

9 - 12


6 - 7

13 - 16


8 - 9

17 - 20


* Do not administer to cats under 1 month of age or weighing less than 1 kg.

Tablets may be given directly by mouth or offered in a small amount of the food. Do not withhold food from the cat prior to or after treatment.


A total of 93 cats with naturally acquired parasite infections were included in two well-controlled laboratory studies to establish the efficacy of Drontal Tablets. In addition, 85 cats and kittens of various sizes, ages and breeds were included in clinical field studies conducted at six veterinary clinics at different locations throughout the United States. Data indicates most cats are cleared of their parasite infections within 7 days of treatment. These studies demonstrated Drontal Tablets are safe and efficacious for the removal of the parasite species indicated on the label when used as directed.


Cats treated with 10 times the highest recommended Drontal dosage during safety studies showed signs of vomition and salivation without other adverse effects. Eighty-three of 85 cats treated with the recommended dosages of Drontal Tablets in a clinical field study did not exhibit any drug related side effects. A temporary loss of appetite was reported for one cat and transient loose stools were observed in a second cat.


Steps should be taken to prevent parasite infections otherwise retreatment will be necessary.

Tapeworms transmitted by fleas will likely reoccur unless measures are taken to control fleas. Flea control procedures must include insecticide treatment of the cats environment (i.e. bedding and resting areas) as well as direct treatment of the cat with dips, powders, sprays or other approved insecticides.

Roundworms and hookworms are controlled by maintaining the cat's environment free of infective eggs and larvae. Feces and soiled litter should be removed on a daily basis to prevent build-up of eggs and larvae in the environment.

Certain parasites such as tapeworms and large roundworms are transmitted to the cat after they eat infected rodents. Controlling the predatory habits of cats from catching and eating rodents will prevent these parasite infections.

Cats maintained under conditions of constant exposure to parasite infections should have a follow-up fecal examination within 2 to 4 weeks after the first treatment.

If reinfection with tapeworms, hookworms or large roundworms occurs, treatment with Drontal Tablets may be repeated.

Warning: Keep out of reach of children.

Drontal Caution

Do not administer to weak or debilitated animals. Do not administer this drug to breeding animals or to animals kept for breeding purposes.

How Supplied

Available in bottles of 50 tablets.

Code 180182

® Drontal, Bayer and Bayer Cross are registered trademarks of Bayer AG, used under license. ™ trademarks of Bayer HealthCare LLC, used under license.

Bayer HealthCare, Bayer Inc., 2920 Matheson Boulevard East, Mississauga, ON L4W 5R6


CPN: 1223013.2

Animal Health (acquired by Elanco Canada Limited)

Telephone:   905-282-5550 or 800-62BAYER (800-622-2937)
Technical Service:   888-663-5326
Technical Services Email:
Order Desk:   800-387-9179
Order Desk Fax:   800-361-3306
Fax:   905-282-5725
Every effort has been made to ensure the accuracy of the Drontal information published above. However, it remains the responsibility of the readers to familiarize themselves with the product information contained on the Canadian product label or package insert.

Copyright © 2020 Animalytix LLC. Updated: 2020-10-21