Free Shipping* On All Orders
1-800-279-7001 Mon - Sat 9 AM To 6 PM CST
Free Shipping*
Free Shipping* On All Orders
15% Extra Discount
Use Coupon: EXPCLD15

Nexgard Spectra Chewable Tablets for Large Dogs 33-66 lbs (Purple)

Price: $54.97
Set Auto Order

Free Shipping


NexGard Spectra for Large Dogs (Purple Pack) - 5 In 1 Parasite Treatment

NexGard Spectra Purple Pack is recommended for large dogs of age 8 weeks and older and weighing between 33 and 66 lbs.

NexGard Spectra is a monthly chewable treatment that provides complete protection against fleas, ticks, heartworms, and intestinal worms like roundworms, whipworms, and hookworms, in a single tasty beef-flavored chew. It rapidly kills fleas and ticks, including brown dog ticks, bush ticks, and the deadly paralysis ticks. The active ingredient kills various mites and controls demodectic mange (caused by Demodex spp.), sarcoptic mange (caused by Sarcoptic mites), and otodectic mange (caused by ear mites). This all-in-one treatment also prevents flea tapeworm infestations by rapidly killing fleas. NexGard Spectra for Large Dogs also prevent deadly heartworm disease and aids in the control of flea allergy dermatitis.

How does NexGard Spectra for Large Dogs work?

NexGard Spectra Purple is highly effective against the most problematic parasites that infect dogs. It is formulated with two key ingredients: Afoxolaner and Milbemycin oxime. Afoxolaner kills fleas within 8 hours of administration by over-stimulating their nervous systems. On the other hand, Milbemycin oxime is a broad-spectrum antiparasitic. It is an anthelmintic (acts against intestinal worms) as well as a miticide (kills various mites spp.) The joint action of Afoxolaner and Milbemycin oxime protects dogs from various disease-causing internal and external parasites when given regularly every month.

Important Note: Please consult your vet before buying this product. Dogs with a history of seizure should only be treated after consulting a vet.

Key Benefits
  • All-rounder monthly treatment for dogs
  • Comes in a highly palatable beef-flavored chewable
  • Single treatment that kills both internal and external parasites
  • Rapidly kills fleas
  • Treats and controls brown dog ticks, bush ticks, and the deadly paralysis ticks
  • Effective against gastrointestinal worms like roundworms, hookworms, and whipworms
  • Effectively prevents heartworm disease
  • Treats and controls three of the most common mites: Demodex mites, Sarcoptic mites, and Ear mites
  • Prevents flea tapeworm infestations
  • Aids in the control of flea allergy dermatitis
  • Weigh your dog before starting the treatment
  • NexGard Spectra is available in different pack sizes according to dog weights
  • Provide it directly into the mouth or mix it with food
Dog Weight (lbs) Pack Color Dosage Afoxolaner Content Milbemycin Oxime Content
4.4-7.7 lbs Nexgard Spectra Orange 1 chew/month 9.4mg 1.9mg
7.7-16.5 lbs Nexgard Spectra Yellow 1 chew/month 18.8mg 3.8mg
16.5-33 lbs Nexgard Spectra Green 1 chew/month 37.5mg 7.5mg
33-66 lbs Nexgard Spectra Purple 1 chew/month 75mg 15mg
66-132 lbs Nexgard Spectra Red 1 chew/month 150mg 30mg
  • Wash hands after use.
  • For veterinary use only.
  • Keep out of sight of children and pets
  • Do not use in breeding, pregnant and lactating dogs.


  • Not suitable for dogs hypersensitive to this product ingredients
  • Do not treat cats with Nexgard Spectra
More Info


Afoxolaner & milbemycin oxime


Does Nexgard Spectra treat Tapeworm And Lungworm?

Nexgard Spectra is recommended to prevent lungworms in dogs, making it the only product that deals with lungworms and ticks, fleas, and roundworms. However, it does not treat tapeworms.


Is Nexgard Spectra Safe For Dogs?

Clinical records show that 98% of treated dogs show no to least side effects. In some rare cases, side effects such as vomiting, itching, lethargy, diarrhea, and loss of appetite are seen in dogs. Moreover, dogs with a history of seizures should not be treated without the vet’s advice.


How is Nexgard Spectra different from Nexgard?

Nexgard kills both fleas and ticks and protects your dog for the whole month against flea and tick infestations. Nexgard Spectra kills both fleas and ticks as well as protects against heartworms. It also treats intestinal worm infections.


Is Nexgard Spectra safe for pregnant dogs?

The safe use of Nexgard Spectra in pregnant dogs has not been evaluated yet. So, it is recommended to consult a vet before treating your pregnant dog.


Can I use Nexgard Spectra for more than once?

Nexgard Spectra is potent enough to provide complete protection for a month. So, therefore it is not recommended to treat more frequently than this.


Can Nexgard spectra help to control FAD?

Yes, Nexgard Spectra kills fleas and treats flea infestations. Thus, it reduces the incidences of Flea Allergy Dermatitis.


Still Have Questions? – Please email us your queries at and we will be happy to help you.

Customer Reviews

imageWe'd Love to Hear From You

Share your review about product and earn 20 reward points.
Write a review
1 of 77 reviews Read All Review
Sort By:

Flea and tick killer

I called it a killer. It wonderfully kills all the nasty parasites and keeps my furry friends healhty and active.
Jan 11, 2023
Billie London

My dog eats it with no problem

Easy and seems to be working fine. I like ordering from Canada vet express.
Dec 09, 2022
Colleen Henri

Nexgard Spectra chewables

Ordered this for a friend and she swears by it
Nov 26, 2022
Christian Haynes

Love Spectra

The best part of this product for me is it kills tapeworms, and takes care of heart worms too. Living in the USA, South and fighting our “Jurassic Park” sized fleas, just injecting a flea can cause nasty tapeworms. So thankful to get this all in one product. Wish we could get it in the States, but happy I can order online. Fast delivery too!
Nov 18, 2022
Lorie Pearson

Thank you

I’ve shopped Canada Vet Express for years and have never been disappointed in the quality, service and shipping. I love the savings too !!!
Nov 13, 2022

Have A Question?

Is this a legitimate product? from the manufacturer? supplies genuine brand products purchased directly from manufacturers, authorized dealers, and genuine wholesalers from across the world.
| Nov 22, 2022
(2) | (0)
are you in canada
We are a global online pet supplies store delivering pet products worldwide.
| Nov 07, 2022
(1) | (0)
Does the nexguard spectra work as well as if you use the heartguard and nexguard separately?
Please consult your vet.
| Aug 22, 2022
(1) | (3)
Does my dog have to be tested for heart worm before taking this med.
It is recommended by most veterinarians and by the manufacturers, dogs should be tested for existing heartworm infestation prior to administration of NEXGARD SPECTRA.
| Aug 22, 2022
(5) | (2)
do you need a prescription for this product??
| May 20, 2022
(6) | (0)

Write A Product Review close

Nexgard Spectra Chewable Tablets for Dogs

  • Name*
  • Email*
  • Title*
  • Rating *
    How Would You Rate This Product?
  • Review*
  • Upload Images
Would you recommend this product?