Girl with a Dog
Girl with a Dog


Protects against fleas, worms, ticks, and mites all with one delicious monthly chewable treat.
New Zealand dogs and their owners are adventurous, constantly exploring and playing in parks, beaches, gardens and bushes. All this exploring puts dogs at risk of parasites. NEXGARD SPECTRA is the most comprehensive treatment, given monthly it protects your dog year-round against internal and external parasites.

NexGard SPECTRA is the most complete parasite protection available for dogs

  • Kills fleas fast

  • Kills ticks

  • Kills ear & mange mites

  • Kills roundworms, hookworms & whipworms

  • Prevents flea tapeworm infestations

  • Protection from 8 weeks of age and 2 kg bodyweight

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dog parasites chart

One and done protection

NEXGARD SPECTRA for dogs is the only product that protects against the four main parasite groups (fleas, intestinal worms, ticks, and mites) in one tasty chew.

NexGard SPECTRA for dogs

The delicious chew that’s tough on fleas, worms, ticks and mites.

Find the dose that’s right for your dog

How to protect your dog with NEXGARD SPECTRA

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Step 1

Purchase NEXGARD SPECTRA in a 1 or 3 month protection pack

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Step 2

Remove a tasty chew from the pack and give to your dog with or without food

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Step 3

Repeat monthly all year round

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Lisa Carrington. Colin's mum and Olympic Gold Medalist

Our popular TV commercial has been updated to reflect Lisa’s uncompromising approach to her training, and her uncompromising approach to protecting Colin. She chooses the most complete parasite protection in a single monthly chew for Colin – one and done.

Find out more about protecting your dog

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three puppies

Gentle protection

NEXGARD SPECTRA given monthly provides optimum protection all year round from fleas, worms, ticks, and mites. NEXGARD SPECTRA is perfect for rapidly growing puppies because of its monthly treatment frequency, and is safe in puppies from as young as 8 weeks of age and weighing 2 kg.

wet dog

Kills fleas fast

Because NEXGARD SPECTRA is an oral treatment, it is absorbed quickly and starts working rapidly, for fast relief for your dog. In two studies, NEXGARD SPECTRA killed 100% of existing fleas in just 6 hours and over 98.5% of newly acquired fleas within 12 hours for a full month1,2. NEXGARD SPECTRA can be given with or without food and isn’t affected by bathing or swimming. Plus, it’s safe for you and your family to handle your dog immediately after treating.


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dog chew

Kills intestinal worms

NEXGARD SPECTRA provides excellent protection from roundworms, hookworms AND whipworms. As with most products for treating worms in dogs, only worms present at the time of treatment are killed. After that, dogs can pick up new worms. Roundworm is an important species to protect against. Once in a dog, a female roundworm can start shedding eggs within 4-5 weeks. These are a zoonotic risk to humans, so it is important to de-worm monthly to minimise this risk.

Find the dose that's right for your dog

NEXGARD SPECTRA has a range of products to suit every pooch from 8 weeks of age and weighing 2 kg or more.

Swipe to find the right dose for your dog

Nexgard spectra for very small dogs (orange box)
NexGard SPECTRA 2 - 3.5kg

(Look for the orange pack for very small dogs.)

small dogs
NexGard SPECTRA 3.6 - 7.5kg

(Look for the yellow pack for small dogs.)

medium dogs
NexGard SPECTRA 7.6 - 15kg

(Look for the green pack for medium dogs.)

large dogs
NexGard SPECTRA 15.1 - 30kg

(Look for the purple pack for large dogs.)

extra large dogs
NexGard SPECTRA 30.1 - 60kg

(Look for the red pack for extra large dogs.)



For dogs over 60 kg, administer the appropriate combination of chews.



1. Beugnet, et al (2014) Afoxolaner against fleas: immediate efficacy and resultant mortality after short exposure on dogs. Parasite, 21, 42.

2. Hunter JS 3rd, Dumont P, Chester TS, Young DR, Fourie JJ, Larsen DL. Evaluation of the curative and preventive efficacy of a single oral administration of afoxolaner against cat flea Ctenocephalides felis infestations on dogs. Vet Parasitol. 2014 Apr 2;201(3-4):207-11. doi: 10.1016/j.vetpar.2014.02.024. Epub 2014 Mar 13. PMID: 24629423.