NexGard Spectra Chewables for Large Dogs 33.1–66.1 lbs (15.1–30 kg) – Purple

NexGard Spectra Chewables for Large Dogs 33.1–66.1 lbs (15.1–30 kg) – Flea, Tick & Heartworm Prevention (Purple)

NexGard Spectra Chewables for Large Dogs deliver complete monthly parasite protection in a single beef-flavored chew. Combining afoxolaner and milbemycin oxime, NexGard Spectra (Purple) protects large dogs weighing 33.1–66.1 lbs (15.1–30 kg) against fleas, ticks, heartworm, and the most common intestinal worms — six parasites covered with one chew, once a month.

What NexGard Spectra Protects Against

• Fleas: Rapidly kills adult fleas before they reproduce.
• Ticks: Controls black-legged (deer), American dog, lone star, and brown dog ticks — the four most common species across the US and Canada.
• Heartworm: Prevents heartworm disease (transmitted by infected mosquitoes).
• Roundworm, hookworm, and whipworm: Treats the three most common canine intestinal worms.

Why Large-Dog Owners Choose NexGard Spectra

• Six parasites, one chew: Replaces a separate flea/tick chew, heartworm preventative, and intestinal wormer.
• Cost-effective for large breeds: Buying one comprehensive product is usually cheaper than three separate ones.
• Easy to give: Beef-flavored soft chew — most dogs treat it like a snack.
• Right size: The Purple pack is dosed for 33.1–66.1 lbs — never split with smaller dogs or substitute across sizes.
• No greasy topical: Bathe, swim, and snuggle right after dosing.

How NexGard Spectra Works

NexGard Spectra combines two active ingredients that work together:

• Afoxolaner is absorbed into your dog’s bloodstream and kills fleas and ticks systemically when they bite — no waiting for skin contact, no greasy residue.
• Milbemycin oxime kills immature heartworm larvae before they mature and treats adult intestinal worms, including roundworm, hookworm, and whipworm.

Who It’s For

• Large dogs weighing 33.1–66.1 lbs (15.1–30 kg)
• Puppies and adult dogs 8 weeks of age and older
• Healthy dogs without a history of seizures (consult your vet if your dog has a seizure history)

How to Give NexGard Spectra

1. Give one Purple chew per month, on the same date each month.
2. Offer directly as a treat, or with food — either works.
3. Make sure your dog chews and swallows the full dose.
4. Year-round dosing keeps heartworm prevention continuous — missed months break the cycle.

Possible Side Effects

NexGard Spectra is well tolerated by most dogs. Mild, short-lived side effects can include vomiting, diarrhea, itching, lethargy, or reduced appetite. Contact your veterinarian if anything persists.

Product Details

• Brand: NexGard Spectra (Boehringer Ingelheim)
• For: Dogs
• Weight range: 33.1–66.1 lbs (15.1–30 kg)
• Pack color: Purple
• Form: Beef-flavored soft chew (oral)
• Active ingredients: Afoxolaner + Milbemycin oxime
• Minimum age: 8 weeks
• Pack sizes available: 3 Chews or 6 Chews
• Coverage: Fleas, ticks, heartworm, roundworm, hookworm, whipworm

Frequently Asked Questions

Is Purple the right pack for a Labrador, Golden Retriever, Husky, or Boxer?
Most adult Labradors, Golden Retrievers, Huskies, Boxers, and similar large breeds fit within the Purple range (33.1–66.1 lbs). Weigh your dog to confirm — especially Labs and Goldens, which can exceed 66 lbs and need the Red pack.

Can I split a Purple chew between two smaller dogs?
No — never split or share NexGard Spectra chews. Each chew is formulated to deliver a single dose of afoxolaner and milbemycin oxime for one dog in the 33.1–66.1 lbs range. Splitting risks both under-dosing and over-dosing.

Does NexGard Spectra prevent flea and tick-borne diseases?
NexGard Spectra kills fleas and ticks fast, which reduces the risk of disease transmission — including Lyme disease, ehrlichiosis, anaplasmosis, and Rocky Mountain spotted fever. No product can guarantee zero risk, but rapid kill is the best defense.

How fast does NexGard Spectra start killing fleas?
Fleas start dying within hours of the chew being consumed, and ticks are killed within 24–48 hours. Each chew provides 30 days of continuous protection.

Do I need a prescription to buy NexGard Spectra?
No — SmartWay Pet Supplies ships NexGard Spectra over the counter to customers across the US and Canada. No prescription or vet authorization required.

Can I switch directly from another monthly preventative to NexGard Spectra?
Yes — give the NexGard Spectra Purple chew on the date your previous preventative would have been due. No washout period is needed when switching between common monthly products.

Helpful Links

• Shop the full NexGard Spectra range
• NexGard Spectra size guide (lbs ↔ kg chart)

Fast shipping across the US & Canada — no prescription required. Use only as directed on the packaging. Information provided for general reference; speak with your veterinarian for medical advice specific to your dog.