K9 Advantix Large Dogs 21-55 lbs (Red)

Price :

$38.65

Deal Price :

$36.72

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Upto 10lbs
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11 to 20lbs
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21 to 55lbs
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4 Doses
6 Dose + 2 Free

K9 Advantix Large Dogs 21-55 lbs (Red) 4 Doses

One Time Purchase

$38.65

Auto Delivery

$34.78

Delivery Frequency

Uses: Treatment for fleas, ticks, lice, mosquitoes, sand flies, stable flies and insects.

Doses: 1 Pipette = 1 Month

Description
Key Benefits
Directions
Safety
More Info
FAQ

Description

K9 Advantix for Large Dogs (21-55 lbs) – Red Pack – Monthly Flea & Tick Spot-On Treatment

K9 Advantix Red for Large Dogs is a monthly topical parasite treatment designed for large dogs and puppies aged 7 weeks or older and weighing between 21-55 lbs. This easy-to-apply spot-on solution works against fleas, ticks, and biting lice while also repelling mosquitoes, sand flies, and stable flies. It also assists in preventing fly-bite dermatitis in dogs. With a convenient once-a-month application, K9 Advantix provides reliable parasite protection for your canine companion.

How does K9 Advantix work?

K9 Advantix contains two active ingredients: imidacloprid and permethrin.

These ingredients work together to protect dogs against external parasites. Imidacloprid targets fleas, while permethrin repels and protects against ticks, mosquitoes, sand flies, and stable flies. After topical application, the solution spreads across the dog’s skin and coat to provide month-long parasite protection.

What to know before using K9 Advantix for Large Dogs?

Consult your veterinarian before use, especially for breeding, pregnant, or lactating dogs.
Do not use on puppies younger than 7 weeks of age or weighing less than 3.3 lbs.
K9 Advantix contains permethrin, which is toxic to cats. Do not use this product on cats.
Avoid prolonged or excessive water exposure, as frequent swimming or bathing may reduce the duration of effectiveness.

Key Benefits

Monthly topical flea and tick treatment for dogs
Helps repel and control fleas and ticks
Repels mosquitoes, sand flies, and stable flies
Assists in reducing the risk of parasite-borne diseases
Helps prevent fly-bite dermatitis
Convenient monthly spot-on application
Provides continuous monthly parasite protection
Available in multiple pack sizes for different dog weight ranges

Directions

Weigh your dog before treatment and select the correct pack size.
Remove one applicator tube from the package.
Hold the applicator upright and remove the cap.
Part the hair on the dog’s back until the skin is visible.
Place the tip of the applicator directly against the skin.
Squeeze firmly to empty the contents onto the skin.
Allow the application area to dry naturally.
Apply once monthly for continuous protection.
Avoid applying to wet or damaged skin.

K9 Advantix Dosage Chart:

Dog Size	Dog Weight	Pack Color	Dosage
K9 Advantix for Small Dogs	1-10 lbs	Green	Once per month
K9 Advantix for Medium Dogs	11-20 lbs	Aqua	Once per month
K9 Advantix for Large Dogs	21-55 lbs	Red	Once per month
K9 Advantix for Extra Large Dogs	Over 55 lbs	Blue	Once per month

Safety

Read the label carefully before use.
Do not apply to wet, irritated, or damaged skin.
Avoid contact with eyes. If eye contact occurs, rinse thoroughly with water and seek medical advice if necessary.
The product remains effective after occasional water exposure, but frequent bathing or swimming may reduce effectiveness.
Do not use in animals with known hypersensitivity to the ingredients.
In case of accidental human ingestion, rinse mouth and contact a physician immediately.
Do not use on cats.
Not for human use.
Consult your veterinarian before starting treatment.
Discontinue use and contact your veterinarian if side effects occur.
Keep out of reach of children and pets.
Store securely to prevent accidental overdose or ingestion.

More Info

Target Species	Dogs
Packs	Small Dogs, Medium Dogs, Large Dogs, Extra Large Dogs
Mode of Administration	Topical
Effective For	Fleas, Ticks, Flies
Active Ingredient	Imidacloprid, Permethrin
Brand Name	K9 Advantix

FAQ

What is K9 Advantix used for?

K9 Advantix is used for the treatment and control of fleas, ticks, mosquitoes, sand flies, stable flies, and biting lice in dogs.

How often should K9 Advantix be applied?

K9 Advantix should be applied once every month for continuous parasite protection.

Does K9 Advantix kill fleas and ticks?

Yes. K9 Advantix helps kill fleas and ticks while also repelling various flying insects.

Can K9 Advantix help prevent parasite-borne diseases?

Yes. By controlling and repelling parasites, K9 Advantix helps reduce the risk of diseases spread by ticks, mosquitoes, and flies.

Is K9 Advantix waterproof?

Yes. Once dry, K9 Advantix remains effective after occasional bathing or swimming. However, frequent water exposure may reduce the duration of effectiveness.

Can K9 Advantix be used on cats?

No. K9 Advantix contains permethrin, which is toxic to cats. It should never be used on cats.

Can K9 Advantix be used on puppies?

Yes. K9 Advantix can be used on puppies from 7 weeks of age and older, weighing at least 3.3 lbs.

What pack sizes is K9 Advantix available in?

K9 Advantix is available in four pack sizes:
K9 Advantix for Small Dogs (Green)
K9 Advantix for Medium Dogs (Aqua)
K9 Advantix for Large Dogs (Red)
K9 Advantix for Extra Large Dogs (Blue)

What should I do if my dog experiences side effects?

If your dog experiences adverse reactions such as vomiting, lethargy, excessive salivation, or hair loss at the application site, contact your veterinarian promptly.

Where can I buy K9 Advantix for Dogs?

You can buy K9 Advantix online from pet supplies store like CanadaVetExpress or from your veterinarian.

Note: All the product-related information is based solely on the official label and manufacturer-provided details. It does not replace professional veterinary advice. Please consult your veterinarian before starting any treatment.

Still Have Questions? – Please email us your queries at support@canadavetexpress.com and we will be happy to help you.

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Customer Review

Overall Rating

4.7/5

48 reviews

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Shawn T.

Easy to order and reorder

I've ordered this a couple of times now and the process has been smooth every time. Easy website to navigate and finding previous orders makes reordering simple.

(Jun 01, 2026)