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Broad-spectrum protection in a single, monthly, tasty chew*

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A monthly treat

A tasty chew that dogs will love

Watch the video to see what dogs think
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Ideal for puppies too

Suitable for lifelong treatment

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Suitable for breeding bitches

Can be used in breeding, pregnant and lactating bitches**

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Parasite protection for dogs couldn’t be easier

One monthly, tasty chew provides broad-spectrum parasite cover
against these key parasites:


Click on each parasite to find out more

dog parasites


  • Flea


  • ticks


  • Mites



  • Controls

  • Prevents

    Lungworm disease

Also covers

  • Hookworms
  • Whipworm
  • Heartworm
  • Eyeworm

When given the choice of both, 9/10 dogs preferred NexGard Spectra®1,2

Study design

Study 1.

Dogs were offered NexGard Spectra® and Simparica Triosimultaneously, one in each hand.


Study 2.

Dogs were offered NexGard Spectra® and Simparica Triosimultaneously, one in each hand.

  • For each study this was repeated once a day over four consecutive days.
  • The hands offering the product were changed each subsequent day, e.g. right hand on day 1 and left hand on day 2.
  • Dogs were allowed to sniff hands, then after choosing a product the other hand was closed.
  • Dogs were observed for 1 minute and it was recorded if the product they chose was consumed. Preference was recorded if one product was consumed more than the other over the four days. No preference was recorded if the product was not consumed or if the choice was equal between the products.

NexGard Spectra® is also suitable for puppies

  • Can be used on puppies

    Can be used on puppies
    from just 8 weeks of age and from 1.35 kg

  • Five weight ranges

    Five weight ranges
    enable appropriate monthly dosing as puppies grow

  • Monthly dosing follows ESCCAP

    Monthly dosing follows ESCCAP‡ 
    puppy roundworming recommendations

NexGard Spectra® offers benefits for owners and practices too

Explore the latest...

Owner materials

Handy resources, like posters for your veterinary practice, and materials to support your client communications.

Click to view more info
Owner materials

Puppy campaign

Engage with new puppy owner clients, helping to keep their new family member happy and healthy while building a lifelong connection with your practice.

Click to view more info
Puppy campaign

Introducing Parassess®

A FREE online, easy-to-use parasite risk checker that helps owners to help you assess their dog’s individual risk. Enables a timely, risk-based prescribing decision in your busy practice.

Learn more
Explore Parassess
  • Owner materials
  • Puppy campaign
  • Parassess risk checker

* NexGard Spectra® is indicated for the treatment of flea and tick infestations in dogs when the concurrent prevention of heartworm disease, angiostrongylosis and/or treatment of gastrointestinal nematode infestations is indicated. NexGard Spectra®’s mite indication is for treatment of sarcoptic mange and demodicosis. NexGard Spectra® does not cover tapeworm.
** The safety of the veterinary medicinal product has not been established in breeding males. In breeding males, use only according to the benefit-risk assessment by the responsible veterinarian.
NexGard Spectra® also covers heartworm, hookworms, whipworm and eyeworm. NexGard Spectra®’s mite indication is for treatment of sarcoptic mange, demodicosis and otodectes cynotis. NexGard Spectra® does not cover tapeworm.
‡ European Scientific Counsel Companion Animal Parasites.

1Perier N, Carithers DS, Everett WR, et al. Preference of Dogs between Two Oral Formulations of Endectoparasiticides:Nexgard Spectra® (Afoxolaner and Milbemycin Oxime) and Simparica Trio™ (Sarolaner, Moxidectin and Pyrantel). Open Journal of Veterinary Medicine 2020;10:155-16. 

2Perier N, Carithers DS, Everettt WR, et al. Preference in Dogs of Two Oral Endectoparasiticide Formulations: NexGard Spectra® (Afoxolaner and Milbemycin Oxime) and Credelio® Plus (Lotilaner and Milbemycin Oxime). Open Journal of Veterinary Medicine 2021; 11, 289-298.

NexGard Spectra® contains afoxolaner and milbemycin oxime. UK: POM-V. Further information available in the SPC or from Boehringer Ingelheim Animal Health UK Ltd., RG12 8YS, UK. UK Tel: 01344 746959 (sales) or 01344 746957 (technical). Email: NexGard Spectra® is a registered trademark of Boehringer Ingelheim Animal Health France SCS, used under licence. ©2024 Boehringer Ingelheim Animal Health UK Ltd. All rights reserved. Date of preparation April 2024. UI-CAN-0028-2024. Use Medicines Responsibly.