NexGard Spectra for Dogs: The One Chew That Kills Fleas, Ticks, Heartworm & Worms All at Once

NexGard Spectra for Dogs


Introduction: One Chew to Rule Them All

If you are a dog owner who wants the most comprehensive parasite protection available, NexGard Spectra is the product your veterinarian is most likely to recommend. In a single monthly beef-flavoured chew, NexGard Spectra tackles fleas, ticks, mites, heartworm disease, and three types of intestinal worms — making it the broadest spectrum oral parasiticide on the market today.

Whether you live in South Africa or anywhere else in the world, parasites pose a year-round threat to your dog. This blog breaks down exactly how NexGard Spectra works, what it covers, and why it stands above the rest.

What Is NexGard Spectra?

NexGard Spectra is a prescription oral tablet from Boehringer Ingelheim — the makers of the trusted NexGard brand. It combines two powerful active ingredients:

  • Afoxolaner — kills fleas and ticks by over-stimulating their nervous system

  • Milbemycin Oxime — prevents heartworm disease and controls intestinal worms


Together, these two ingredients provide protection against seven parasite threats in one palatable chew that dogs typically love. Available in five weight-based sizes, it covers dogs from 2 kg all the way up to 60 kg.

Complete Parasite Coverage: What Does NexGard Spectra Treat?

Here is a full breakdown of what NexGard Spectra protects your dog against:


Parasite

Coverage

Speed of Action

Adult Fleas

Kills & prevents infestations

Within 8 hours

Paralysis Ticks

Treats & controls

Within 48 hours

Brown Dog Ticks

Treats & controls

Within 48 hours

Bush Ticks

Treats & controls

Within 48 hours

Heartworm (D. immitis)

Full prevention

Monthly protection

Roundworms

Treats & controls

Single dose effective

Hookworms

Treats & controls

Single dose effective

Whipworms

Treats & controls

Single dose effective

Mange & Mites

Treats & controls

Within 7–14 days

Flea Allergy Dermatitis

Controls via flea elimination

Ongoing monthly


NexGard Spectra vs Regular NexGard: What Is the Difference?

A common question dog owners ask is how NexGard Spectra differs from the standard NexGard product. Both contain afoxolaner and protect against fleas and ticks. However, NexGard Spectra adds milbemycin oxime, which provides the crucial layer of heartworm and intestinal worm protection.

Put simply: if your dog is only on standard NexGard, you still need a separate heartworm preventative and a dewormer. NexGard Spectra combines all three into one chew — saving you money, effort, and the stress of multiple medications.

Dosage Guide: Which Size Does Your Dog Need?


Dog Size

Weight Range

Afoxolaner

Milbemycin Oxime

Extra Small

2.0 – 3.5 kg

9.4 mg

1.9 mg

Small

3.6 – 7.5 kg

18.8 mg

3.8 mg

Medium

7.6 – 15.0 kg

37.5 mg

7.5 mg

Large

15.1 – 30.0 kg

75.0 mg

15.0 mg

Extra Large

30.1 – 60.0 kg

150.0 mg

30.0 mg

How to Give NexGard Spectra to Your Dog

  • Weigh your dog before each monthly dose to ensure the correct size chew

  • Remove only one chewable at a time from the foil blister pack

  • Offer it directly as a treat or mix it into a small amount of food

  • Watch your dog for a few minutes to confirm the full chew is consumed

  • If any part of the chew is rejected or lost, re-dose with a full chew

  • Administer on the same date every month for consistent protection


Is NexGard Spectra Safe?

NexGard Spectra is approved for use in dogs and puppies from 8 weeks of age weighing at least 2 kg. It is also safe for use in breeding, pregnant, and lactating dogs — a major advantage over many other treatments. As with all parasite treatments in the isoxazoline class, dogs with a known history of seizures should be evaluated by a vet first.

Side effects are rare but may include vomiting, diarrhoea, or lethargy. Most dogs tolerate the chew without any issues.

Why Buy NexGard Spectra from BudgetPetSupplies.co.za?

  • Competitive pricing — single chews and value 3-packs available

  • Free shipping on all orders above R500

  • 100% money back guarantee and PCI-certified secure checkout

  • Trusted by thousands of South African pet owners — rated 4.8/5 with 139 reviews

  • Auto-Delivery option available at 10% off for recurring protection


Final Thoughts

NexGard Spectra is one of the most complete parasite protection products available for dogs anywhere in the world. With one chew per month, you protect your dog from fleas, ticks, heartworm, mites, and multiple intestinal worms — all from a product that tastes like a treat.

Whether you have a tiny Chihuahua or a large German Shepherd, there is a NexGard Spectra size perfectly suited to your dog. Speak to your veterinarian and order today from BudgetPetSupplies.co.za.



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