NexGard Spectra for Extra Large Dogs is a monthly chewable covering dogs between 30.1 and 60 kg. A single beef-flavoured chew administered once a month provides protection against fleas, paralysis ticks, other ticks, mites, lice, heartworm, and a range of intestinal worms — covering most of the parasite risks Australian dogs face.

The active compounds are afoxolaner, which kills fleas and ticks rapidly after biting, and milbemycin oxime, which covers heartworm and intestinal worms including roundworm, hookworm, whipworm, and tapeworm. Together they provide coverage breadth that removes the need for separate heartworm tablets or additional worming treatments. The beef-flavoured chew format is designed for easy administration — most dogs take them without needing to be hidden in food. Each 3-pack covers three months.

For owners managing a large or giant breed, the appeal is consolidation — one monthly chew instead of a stack of separate tablets. The dosage range covers a wide sweep of large breeds, from bigger Labradors and German Shepherds through to Rottweilers and large Standard Poodles.