Drontal Allwormer Chews treat all four major intestinal worm types commonly found in Australian dogs — roundworm, hookworm, whipworm, and tapeworm — in a single palatable chew given every three months. This large dog variant is dosed for dogs weighing 20.1 to 35 kilograms. One chew quarterly is all that's required for ongoing intestinal worm protection.

The active ingredients pyrantel embonate and praziquantel cover roundworm and tapeworm respectively, while febantel — converted to fenbendazole in the body — addresses whipworm and hookworm. Together they cover the full spectrum of intestinal worms dogs can pick up in Australia. Intestinal worms can be transmitted to people, so quarterly treatment is relevant in any household with dogs and children. Drontal does not cover fleas, ticks, or heartworm — a separate product is needed for those.

The chewable format removes the need to conceal a tablet in food. Quarterly dosing keeps the treatment schedule manageable, and Drontal has been a standard allwormer choice in Australia for decades — widely stocked by pet retailers and veterinary clinics alike.