NexGard Spectra for Large Dogs (15.1 - 30 kg)
$26.99
Product Information
NexGard Spectra for Large Dogs is a monthly chewable that protects dogs 15.1 to 30 kg against fleas, paralysis ticks, mites, lice, heartworm, and intestinal worms in a single beef-flavoured chew. The chew combines afoxolaner (an oral isoxazoline ectoparasiticide) with milbemycin oxime to deliver broad-spectrum protection without separate heartworm tablets, worming pastes, or topical applications.
Health Benefits
- Broad-spectrum parasite protection: covers fleas, paralysis ticks, brown dog ticks, bush ticks, sarcoptic and demodectic mange mites, chewing lice, heartworm, roundworm, hookworm, and whipworm in one monthly chew
- Single-dose convenience: replaces the need for separate flea, tick, heartworm, and intestinal worm products with one monthly beef-flavoured chew
- Starts working quickly: afoxolaner begins killing fleas within 8 hours and paralysis ticks within 48 hours of administration
- Suits 15.1 to 30 kg dogs: the purple pack is dosed for medium-to-large breeds including most Labradors, Border Collies, Australian Shepherds, and similar-sized dogs
- Tasty chew format: designed for high palatability so most dogs take the chew straight from the hand without hiding in food
- Vet-approved for puppies from 8 weeks: suitable for puppies of eligible weight from 8 weeks of age and 2 kg minimum body weight
NexGard Spectra for Large Dogs is a monthly flea, tick, and worming treatment that delivers full-spectrum parasite protection for dogs 15.1 to 30 kg in a single beef-flavoured chew.
What It's Used For
- Flea infestation and prevention: kills adult fleas within 8 hours and breaks the flea life cycle by interrupting reproduction
- Paralysis tick prevention: protects against the Australian paralysis tick (Ixodes holocyclus), the most dangerous tick species in eastern Australia, killing ticks within 48 hours of attachment
- Sarcoptic mange and demodicosis: treats and controls sarcoptic mange mites and demodex mites that cause persistent itching and skin irritation
- Heartworm prevention: monthly milbemycin oxime prevents heartworm disease (Dirofilaria immitis), eliminating the need for separate heartworm tablets or injections
- Intestinal worm control: treats and controls roundworm, hookworm, and whipworm infections that cause dog diarrhoea, weight loss, and poor coat condition
Ingredients & Nutrients
Active ingredients per chew (15.1 to 30 kg band): afoxolaner approximately 75 mg, milbemycin oxime approximately 15 mg. Beef-flavoured chew base with standard tablet binders.
Product Specifications & Care
- Species: Dog
- Life stage: Puppies from 8 weeks and 2 kg, adults, and seniors
- Weight range: 15.1 to 30 kg
- Best for: Dogs needing all-in-one monthly flea, tick, mite, heartworm, and intestinal worm protection
- Not suitable for: Dogs outside the 15.1 to 30 kg weight band, consult your vet for alternative size variants
- Also available as: NexGard Spectra for Very Large Dogs (30.1 to 60 kg) for larger dogs, and Medium (7.6 to 15 kg) for smaller dogs in the same family
- Storage: Store below 30 °C in the original blister pack until use
How to Give NexGard Spectra for Large Dogs
Give one chew orally with or without food, once every month. The chew can be administered straight from the hand or hidden in a small treat. For continuous protection, schedule monthly dosing on the same calendar day each month. If you miss a dose, give the chew as soon as you remember and resume monthly dosing from that date.
| Body weight | Dose | Frequency |
|---|---|---|
| 15.1 to 30 kg | 1 chew (purple pack) | Once monthly |
Why Dr Jack Ayerbe Recommends It
“NexGard Spectra is my go-to recommendation for owners looking for comprehensive parasite protection without the complexity of stacking three or four separate products. One chew, once a month, covers fleas, paralysis ticks, mites, lice, heartworm, and intestinal worms. For active dogs in the 15 to 30 kg range, especially those that swim, bushwalk, or holiday in tick-prone areas of eastern Australia, the convenience of a single oral product matters: missed doses are the single biggest reason parasite control fails. If your dog is scratching, has visible fleas, or you find an attached tick, see your vet promptly: NexGard Spectra prevents but does not substitute for veterinary assessment of an active infestation.”
— Dr. Jack Ayerbe OAM, Veterinarian & Vets Love Pets Partner
Shipping
Non-Prescription Products:
• Free shipping on metro orders over $49+.
• Shipping fee for regional orders & metro orders under $49 will be calculated at checkout.
Prescription Medications:
Shipped separately via express shipping at a flat rate of $9.49, or select free standard shipping until 31st May, 2026.
Returns
Non-Prescription Products:
We offer a hassle-free return policy within 30 days for unopened items in original condition for exchange or store credit. Refunds are available if the product is faulty or not as described; however, food or treats cannot be returned once opened.
Prescription Medications:
We cannot accept change of mind returns for prescription products, given that there are laws that prohibit the resale of medication. Please make your selections carefully, and double-check your order before submitting.
Palatability Guarantee
Our Palatability Guarantee applies to selected brands, including Advance, Royal Canin, Purina, Hill's and 4CYTE, allowing you to return any unused portion of dry/wet food for an exchange or full refund.
- MSLevel 3Melanie S.Verified BuyerRated 5 out of 5 starsFlea and tick treatmemt
We find this effective and a convenient treatment for our 14+ senior golden retriever. She chews it like a treat!
- MALevel 2Marthessa A.Verified BuyerRated 5 out of 5 starsNexgard Spectra
This is a product I knew well from having previous dogs, but what I like about this is the recurring order. Previously I'd forget when I had to purchase a packet. In this way, the forgetting is a thing of the past.
- DPLevel 2Deborah P.Verified BuyerRated 5 out of 5 starsNexgard
Very good, wish it was more chewy though
- STLevel 3Sharee T.Verified BuyerRated 5 out of 5 starsGreat product
Makes living in tick area easier knowing my dogs are protected
- SRLevel 2S R O.Verified BuyerRated 5 out of 5 starsGood Product, Good Value
Easy, chewable monthly tablet. Good value and great that its a 3 pack.
Why Choose NexGard?
NexGard is a popular flea and tick treatment for dogs that has gained a reputation for its effectiveness in preventing and treating infestations in Australia. Developed by the animal health company, Merial, in 2013, NexGard was the first chewable tablet to contain the active ingredient afoxolaner, a new class of insecticide called isoxazolines. This ingredient works by interfering with the insect's nervous system, leading to paralysis and ultimately death. Unlike traditional flea and tick treatments, which rely on topical solutions, collars or sprays, NexGard's chewable formulation makes it easier to administer and less messy for pet owners.
NexGard's ability to kill fleas and ticks within hours of administration, along with its long-lasting protection for up to 30 days, has made it a popular choice for pet owners in Australia. Before starting any new medication, it's important to consult with a veterinarian to ensure that it is safe and appropriate for your pet's individual needs.
NexGard Spectra: Complete Protection for Your Dog
NexGard Spectra is a tasty, beef-flavoured chewable tablet that provides complete protection against fleas, ticks, heartworm, and intestinal worms. It is proven to kill fleas before they can lay eggs, control tick infestations, and prevent flea allergy dermatitis. It also treats and controls hookworm, roundworm, and whipworm infections, and prevents heartworm disease. Safe for puppies as young as 8 weeks and for dogs weighing 2kg or more, NexGard Spectra is a trusted brand, recommended by all Australian Veterinarians, that is not only easy to administer and delicious, but also delivers comprehensive protection against common parasites.
Frequently Asked Questions
NexGard Spectra for Large Dogs (15.1 to 30 kg) covers fleas (adult and breaking the life cycle), the Australian paralysis tick, brown dog tick, bush tick, sarcoptic and demodectic mange mites, chewing lice, heartworm, and the three main intestinal worms (roundworm, hookworm, whipworm). It does not cover tapeworm, so dogs with tapeworm exposure may need an additional tapewormer. For a side-by-side comparison with other monthly parasite products, see Dr Jack Ayerbe's guide to the best dog parasite treatments and preventatives.
No. NexGard Spectra is available over-the-counter in Australia and does not require a veterinary prescription. We do recommend speaking with your vet to confirm the right size band for your dog's current weight as part of a broader preventative care plan.
Once every month, given orally as a single chew. For year-round protection in paralysis tick areas of eastern Australia, monthly dosing should be continuous and not seasonal. Mark the same calendar day each month as the dosing day to maintain consistent protection.
Yes, provided the puppy is at least 8 weeks of age and weighs over 2 kg. For puppies in the 15.1 to 30 kg range (typically large-breed puppies at 4 to 6 months), this product is appropriate. For lighter puppies, use the smaller-band variant matched to their current weight, then move up as they grow.
If vomiting occurs within 2 hours of dosing, administer a second full dose with food and contact your veterinarian for advice. After 2 hours, the active ingredients have typically been absorbed and no re-dose is needed. Persistent vomiting after a NexGard Spectra dose should be reviewed by your vet.
