NexGard Spectra XS (orange) 3.6 mg/18 mg chewable tablets for dogs for flea, tick, and heartworm prevention

Nexgard Spectra XS (orange)


Price Per per chewable tablet (not box): $ 22.61
 Dispensing Fee: $ 4.99
Standard Package Size: 6

This is a prescription item and its sale is subject to verification of prescriptions on file and/or the authorization of a prescribing veterinarian.

Subtotal
$ 0.00
Dispensing Fee
$ 0.00

Total $ 0.00
 

DIN#: 02473364
Strength: 1.9mg/9.4mg
Dosage Form: per chewable tablet (not box)
Package Size: 6
Refrigerate: No
LMA: No
Manufacturer: Boehringer Ingelheim Animal Health
Active Ingredients: Milbemycin/Afoxolaner

What This Medication Is Used For

NexGard Spectra XS is a prescription oral chewable for dogs that provides protection against multiple parasites. It is used to control flea and tick infestations, prevent heartworm disease, and treat or control specific intestinal parasites, as directed by a veterinarian.

Conditions it treats

  • Flea infestations

  • Tick infestations

  • Heartworm disease prevention

  • Certain intestinal parasites, including roundworms and hookworms

Common signs that may lead to treatment

  • Persistent scratching, biting, or skin irritation linked to fleas

  • Ticks found attached to the skin or signs of tick bites

  • Ongoing parasite exposure due to outdoor activity, travel, or regional risk

Why veterinarians may prescribe it

  • When a dog requires combined external and internal parasite protection

  • When a single monthly chewable supports consistent prevention

  • When parasite control needs to align with the dog’s lifestyle and health history

How It Works

NexGard Spectra XS contains two active components that work together to target different parasites. One component eliminates fleas and ticks, while the other disrupts heartworm larvae development and controls certain intestinal worms.

This medication acts within the dog’s body and does not treat the surrounding environment. In cases of active flea infestations, your veterinarian may recommend additional household or environmental management measures.

How it compares to other parasite preventatives
Some parasite products address only fleas and ticks or only heartworm prevention. NexGard Spectra combines these functions into a single chewable tablet, when your veterinarian determines this approach is appropriate.

Use in ongoing parasite prevention
Parasite risk can change based on geography, season, and lifestyle. Veterinarians may reassess prevention plans over time to ensure continued suitability.

Dosage and Strength Information

The dose and administration schedule are prescribed by your veterinarian. Always follow veterinary instructions and do not adjust dosing without professional guidance.

What this strength is typically used for
The XS (orange) strength, 3.6 mg/18 mg, is generally prescribed for very small dogs when a lower-dose formulation is required to support accurate dosing and safe parasite prevention.

Other NexGard Spectra strengths

Safety Information and Possible Side Effects

Not all dogs experience side effects. When they do occur, reported effects may include vomiting, diarrhoea, reduced appetite, or lethargy.

Contact your veterinarian if you notice

  • Vomiting or diarrhoea that persists

  • Unusual tiredness, behaviour changes, or loss of appetite

  • Signs of an allergic reaction such as facial swelling, hives, or itching

Age, health, and species considerations
NexGard Spectra is intended for dogs only and is not suitable for puppies under 8 weeks of age. Your veterinarian will assess your dog’s health history, including any neurological conditions, before prescribing this medication.

Prescription Requirements in Canada

This product is classified as a prescription medication in Canada. A valid veterinary prescription and authorisation are required before dispensing and shipping.

Prescription submission options

  • Your veterinarian may fax or call the prescription directly to the pharmacy

  • You may request that the pharmacy contact your veterinarian on your behalf

  • If uploading a copy, the original prescription must be mailed before shipment

Orders containing prescription medications are held until authorisation is received and verified.

Shipping and Fulfilment Information

Orders are processed once prescription approval is complete and the product is in stock.

Packaging and delivery

  • Shipped via Canada Post

  • Prescription shipments require proof of delivery and may be carded for pickup

  • Tracking information is provided once dispatched

Processing notes

  • Payment is captured when the order is prepared for shipment

  • Delivery timelines begin once the package leaves the pharmacy and may be affected by prescription verification or availability

Pricing information
Pricing is shown per chewable tablet. A dispensing fee applies. Standard manufacturer packaging contains 6 chewables.

Frequently Asked Questions

  1. Can NexGard Spectra XS be purchased without a prescription?
    No. Canadian regulations require a valid veterinary prescription before dispensing.

  2. Is NexGard Spectra different from regular NexGard?
    Yes. NexGard Spectra provides flea and tick control along with heartworm prevention and coverage for certain intestinal parasites. Your veterinarian can advise on the best option.

  3. Is this medication safe for cats?
    No. NexGard Spectra is formulated for dogs only. Consult your veterinarian for feline parasite prevention options.

  4. What should I do if my dog becomes unwell after dosing?
    Contact your veterinarian for guidance, particularly if symptoms such as vomiting, diarrhoea, or lethargy occur.

  5. Is heartworm testing required before starting treatment?
    Testing may be recommended depending on your dog’s medical history, travel, and regional risk. Follow your veterinarian’s advice.