NexGard Spectra for Dogs is an all-in-one monthly chew that protects against fleas, ticks, mites, mange, heartworm, and intestinal worms. Designed to simplify parasite protection, this beef-flavored chew combines powerful ingredients to deliver broad-spectrum coverage in a single tasty chew. It rapidly kills adult fleas and controls ticks, including Paralysis ticks (Ixodes holocyclus) and Brown Dog ticks (Rhipicephalus sanguineus). Suitable for dogs and puppies from 8 weeks of age and weighing at least 4.4 lbs.
NexGard Spectra starts killing fleas within 6–8 hours, eliminating newly acquired fleas before they can lay eggs. It treats and controls tick, mange (demodectic and sarcoptic), and ear mite infestations. By preventing fleas, it also helps stop flea tapeworm infestations and controls flea allergy dermatitis. In addition, it prevents heartworm disease caused by Dirofilaria immitis and treats and controls roundworms, hookworms, and whipworms, providing complete monthly parasite protection.
Your veterinarian can help determine the correct strength based on your dog’s current weight.
Dosage:
| Dog weight (lbs.) | Dog size | Pack color | Chewable size (g) | Afoxolaner (mg/chew) | Milbemycin oxime (mg/chew) |
| 4.4 - 7.7 | Extra small | Orange | 0.5 | 9.4 | 1.9 |
| 7.7 – 16.5 | Small | Yellow | 1 | 18.8 | 3.8 |
| 16.5 - 33 | Medium | Green | 2 | 37.5 | 7.5 |
| 33 - 66 | Large | Purple | 4 | 75.0 | 15.0 |
| 66 - 132 | Extra-large | Red | 8 | 150.0 | 30.0 |
| Over 132 Administer the appropriate combination of chewables | |||||
Active ingredients:
| Product Name | Pet Size | Pet Weight (lbs.) | Color Code |
| NexGard Spectra for Dogs | Extra-Small Dogs | 4.4 - 7.7 | Orange |
| NexGard Spectra for Dogs | Small Dogs | 7.7 – 16.5 | Yellow |
| NexGard Spectra for Dogs | Medium Dogs | 16.5 - 33 | Green |
| NexGard Spectra for Dogs | Large Dogs | 33 - 66 | Purple |
| NexGard Spectra for Dogs | Extra-large Dogs | 66 - 132 | Red |
NexGard Spectra is a once-monthly, highly palatable beef-flavored chew that provides comprehensive protection against fleas, ticks (including brown dog tick and paralysis tick), mites, mange, heartworm, and intestinal worms—all in one chew. See product label for full claim details and directions for use.
Yes. Paralysis ticks (Ixodes holocyclus) are extremely dangerous parasites. A single adult female tick can be fatal to a dog or cat if left untreated.
Both NexGard and NexGard Spectra contain afoxolaner, which protects against fleas, ticks, mites, and mange. NexGard Spectra also contains milbemycin oxime, providing additional protection against heartworm and intestinal worms—making it a more complete, all-in-one monthly option.
NexGard Spectra kills ticks by over stimulating their nervous system, resulting in the death of the parasite.
It provides protection against fleas, ticks, mites, mange, heartworm, and intestinal worms in one monthly chew. Refer to the product label for full claim details.
Mites such as Sarcoptes scabiei (scabies mites) may cause intense itching, hair loss, and skin infections. Red, scaly skin often appears in areas with thin hair, such as the armpits or groin. Your veterinarian can confirm a diagnosis with a skin scrape examination.
Symptoms may include scratching around the ears, head shaking, dark waxy discharge resembling coffee grounds, and an unpleasant odor. Your veterinarian can confirm ear mites (Otodectes cynotis) by examining ear debris under a microscope.
NexGard Spectra provides protection against ticks, including the paralysis tick, for a full month. For optimal protection, administer on or around the same date each month.
NexGard Spectra kills ticks effectively. Sometimes a dead tick’s mouthparts may remain attached but can be removed carefully using tweezers or a tick removal device. Consult your veterinarian if unsure.
Yes. Due to its rapid killing speed and month-long flea protection, NexGard Spectra is suitable for dogs with flea allergy dermatitis. Year-round monthly treatment is recommended in flea-prone areas.
Yes. It rapidly kills fleas before they can lay eggs, helping reduce flea infestations. However, in moderate to heavy environmental infestations, multiple monthly treatments may be required due to ongoing flea life cycle stages in the environment.
Fleas may become more visible as the product over-stimulates their nervous system before they die.
Fleas already present on your dog are killed within 6–8 hours after administration. See product label for full details.
It provides protection against fleas and key tick species for a full month.
Administer the first dose of NexGard Spectra on or before the next scheduled heartworm prevention date to avoid gaps in protection. If prevention has lapsed, consult your veterinarian.
Its use in heartworm-positive dogs has not been evaluated. Speak to your veterinarian for guidance.
NexGard Spectra contains soy protein and no animal meat protein (including in the beef flavoring). It is gluten-free. Use with caution in dogs with known soy hypersensitivity.
The active ingredients are absorbed within approximately 4 hours, with fleas killed within 8 hours. Refer to the product label for complete details.
Chews are mottled red to reddish-brown. The 4.4–7.7 lbs chew is circular, while higher weight ranges are rectangular.
No. NexGard Spectra provides protection for a full month and should not be administered more frequently than recommended.
No. It can be given with or without food at a time that suits you and your dog.
When used as directed, it has been shown to be safe and effective across various breeds, including Collie breeds.
Afoxolaner belongs to the isoxazoline family. Rare neurological reactions, including seizures, have been reported with this class. Use with caution in dogs with a history of seizures and consult your veterinarian before use.
Yes! PetCareSupplies regularly offers special deals and seasonal promotions on NexGard Spectra and other pet essentials. It’s a great way to stock up on your dog’s monthly parasite protection while saving a little extra. Check now for exclusive discounts and limited-time offers.
4.5 
Covers everything in one chew.