NexGard Spectra Dog Extra Large 66.2 - 132.2lbs Red

NexGard Spectra offers monthly protection against fleas, ticks, intestinal worms, and heartworm with a tasty beef-flavored chew that dogs love, effective within 8 hours and lasting up to a month.

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Description chevron-down

Nexgard Spectra Dog Extra Large Dog


In just one chew, Nexgard Spectra provides the most comprehensive parasite protection available to dogs. The chew makes parasite protection so easy that there is no need for sprays, spot-ons, tablets, or collars - just one delicious chew.

Nexgard Spectra can be given from just 8 weeks of age onwards, so whether you've adopted a new puppy, rescued a dog or adopted a senior dog, there's a Nexgard Spectra that's right for you.

Nexgard Spectra is suitable for dogs between 2 kg and 60 kg. Remember to pick a pack with the correct weight range for your growing dog, and to give your dog Nexgard Spectra treats every month as your dog grows.


Protect from fleas:

  • The flea-killing properties of Nexgard Spectra protect your dog's health and your house from fleas.
  • They're not just a bother. Dogs can get skin problems from them, they can transmit diseases, and they can be irritating
  • Although it is best to prevent fleas from the start, if your dog does acquire them, regular use of Nexgard Spectra will kill them quickly and prevent them from infesting your home.

Protect from ticks: 

  • With one chew, Nexgard Spectra helps protect your dog from deadly Paralysis ticks, Bush ticks and Brown Dog ticks for a full month
  • The Paralysis tick causes the most concern as without protection, dogs can die from the effects of the toxin it injects
  • In large numbers, Brown Dog ticks can also harm dogs with life-threatening anaemia and by transmitting other dangerous parasites such as Babesia

Protect from heartworm disease: 

  • Nexgard Spectra is given monthly to protect your dog from heartworms (Your vet may require a heartworm test before Nexgard Spectra can be given.)
  • All Australian mainland states are infested with mosquitoes that spread the disease
  • When left untreated, this disease can be fatal, so it's important to protect your dog against it.

Protect from intestinal worms: 

  • With Nexgard Spectra, your dog is protected from roundworms, hookworms, and whipworms.
  • Nexgard Spectra provides effective flea control that prevents flea tapeworm (Dipylidium caninum) infestations in dogs. (If you live in a rural area, you may also need to protect against hydatid tapeworms.) Ask your vet about the deworming requirements in your area.
  • Several parasitic worms may not harm your dog, but in large numbers, they can rob him of nutrients and harm his health.
  • Worm prevention can help keep your dog healthy.

Protect from mites: 

  • Infestations of demodectic mange caused by Demodex spp., sarcoptic mange caused by Sarcoptes scabiei and ear mite (Otodectes cynotis) are treated and controlled by Nexgard Spectra.

In one chew, Nexgard Spectra offers complete protection against fleas, ticks, mites, heartworms and intestinal worms.

We know your dogs love Nexgard Spectra - it's a tasty beef-flavored chew! Nexgard Spectra was well received by dogs in a 3-month field study conducted in Australia.

Nexgard Spectra is easy to administer - with or without food, depending on how convenient it is for you.

Unlike some sprays, Nexgard Spectra is not affected by bathing, swimming, or shampooing.

Packages are available for 3- and 6-month protection.

This size treats dogs from 30.1 - 60kg bodyweight


More Information chevron-down

Animal Type Dog
Breed Size 45-88lbs, 89lbs Plus
Brand NexGard Spectra

NexGard Spectra contains the following active ingredients: Afoxolaner and Milbemycin Oxime.

Afoxolaner is an ectoparasiticide, meaning it targets external parasites such as fleas, ticks, and mites. It effectively kills fleas before they can lay eggs, helping to reduce contamination of the dog's environment. Afoxolaner is also highly effective against various types of ticks, including paralysis ticks, bush ticks, and brown dog ticks.

Milbemycin Oxime serves as an endo parasiticide, targeting internal parasites such as worms that reside inside dogs. It is effective against different types of worms, including roundworms, hookworms, and whipworms. Milbemycin Oxime helps in preventing and controlling these internal parasites in dogs.

Possible Side Effects

NexGard Spectra, like any medication, may have potential side effects. While not all dogs experience them, some possible adverse reactions to NexGard Spectra may include:

Gastrointestinal Disturbances: Common side effects may involve mild digestive issues such as vomiting, diarrhea, or decreased appetite. These symptoms are usually temporary and resolve on their own.

Dermal Reactions: In some cases, dogs may exhibit skin-related reactions like itchiness, redness, or rash. If these symptoms persist or worsen, it is advisable to consult with a veterinarian.

Neurological Effects: Although rare, certain dogs may have neurological symptoms such as tremors, instability, or seizures. If any of these signs occur, immediate veterinary attention is necessary.

It's important to note that these side effects are not exhaustive, and there may be other less common reactions. If you notice any unusual or severe symptoms after administering NexGard Spectra to your dog, it is crucial to contact your veterinarian for guidance and assistance.

Directions for use

Dosage: Administer one NexGard Spectra chewable tablet, according to the weight range specified on the packaging. For extra large dogs weighing between 66.2 - 132.2 lbs , use the appropriate strength tablet designed for their weight.

Oral Administration: Offer the tablet directly to your dog or mix it with a small portion of their regular food. Ensure that your dog consumes the entire tablet.

Monthly Treatment: NexGard Spectra is intended for monthly use. Administer one tablet on the same day each month to maintain continuous protection against fleas, ticks, and internal parasites.

Compliance: It is crucial to adhere to the recommended dosing schedule to maximize the effectiveness of NexGard Spectra. Missing a dose or using the product irregularly may decrease its efficacy.
Additional Information: NexGard Spectra is not affected by bathing or swimming. Your dog can continue regular activities, including exposure to water, immediately after administration.

Always read the product packaging and follow the instructions provided


Use only for dogs: NexGard Spectra is specifically formulated for dogs and should not be administered to other animal species.

Age and weight restrictions: Ensure that the product is appropriate for your dog's age and weight range as indicated on the packaging. Do not use NexGard Spectra on puppies, small and medium dogs or weighing less than 66.2 lbs.

Known hypersensitivity: If your dog has a known hypersensitivity or allergy to any of the ingredients in NexGard Spectra, avoid its use and consult with your veterinarian for alternative options.

Concurrent medications: Inform your veterinarian about any other medications, supplements, or treatments your dog is receiving. Some medications may interact with NexGard Spectra, so it's important to discuss potential interactions with your veterinarian.

Safety during breeding, pregnancy, and lactation: The use of NexGard Spectra in breeding dogs, pregnant dogs, or lactating dogs has not been extensively studied. Consult with your veterinarian to evaluate the potential risks and benefits before administering this product in such situations.

Adverse reactions: Monitor your dog closely after the administration of NexGard Spectra. If any unexpected or severe side effects occur, such as vomiting, diarrhea, skin irritations, or neurological symptoms, discontinue use and seek immediate veterinary assistance.

Keep out of reach of children: Store NexGard Spectra in a secure place, away from the reach of children. Accidental ingestion by children should be avoided.