One monthly chew. Six months of broad-spectrum protection. Sentinel Spectrum is a beef-flavoured monthly chewable that helps keep your dog protected against heartworm, intestinal worms, and fleas — all in one palatable treat that 97% of dogs accept straight from the hand.

Each chew combines three active ingredients — milbemycin oxime, lufenuron, and praziquantel — to cover the full range of common canine parasites. Milbemycin oxime targets heartworm larvae and intestinal worms; lufenuron works as a flea birth control by stopping flea eggs from developing into adults; and praziquantel treats and controls tapeworms.

Sentinel Spectrum is registered in Australia for use in dogs and puppies from 6 weeks of age, including breeding males and females.

Key Features

• Heartworm prevention: Prevents heartworm disease caused by Dirofilaria immitis
• Intestinal worm treatment and control: Treats and controls adult roundworms (Toxocara canis, Toxascaris leonina), hookworms, whipworms, and tapeworms
• Flea population control: Lufenuron prevents flea eggs from hatching — interrupts the flea life cycle without killing adult fleas directly
• Three active ingredients in one chew: Milbemycin oxime + lufenuron + praziquantel
• Beef-flavoured monthly chew: Highly palatable — studies show 97% of dogs accept it directly from the hand
• Once monthly dosing: Give with a full meal or immediately after eating — ideally on the same date each month
• Suitable from 6 weeks of age: Safe for puppies, adult dogs, and breeding males and females

Active Constituents (per chew — Blue pack)

How to Administer

Give one chew orally once every month, with a full meal or immediately after eating. For heartworm prevention, administer monthly throughout the mosquito season. If given seasonally, the first dose should be given within 30 days of the dog’s first exposure to mosquitoes.

⚠️ Please note: Dogs should be tested for existing heartworm infection before starting Sentinel Spectrum. This product does not treat Spirometra spp. tapeworms. For use in dogs only — not for use in cats. This product contains beef and wheat — check with your vet if your dog has known food sensitivities. This is a prescription-only veterinary medicine (Schedule 4) in Australia — a valid veterinary prescription is required for purchase.

💡 Tip: For best results, administer on the same day each month and note the date on the calendar to maintain consistent protection.

Suitable For: Dogs and puppies from 6 weeks of age — Blue pack suitable for dogs 22–45 kg (confirm weight range on pack before publishing).

View more from our range of flea treatment for dog supplies.