K9 Advantix® II for Dogs

Not a veterinary professional?

Get the information you need about this product on our site designed especially for pet owners.


Prescribing Information for Veterinary Professionals

K9 Advantix® II is a convenient monthly topical application that kills and repels fleas, ticks and mosquitoes, kills lice and repels biting flies. It’s specially formulated for dogs with imidacloprid, permethrin and pyriproxyfen for broad-spectrum protection against these ectoparasites that can transmit diseases to your patients. And because it kills through contact, there’s no biting required.

  • ParasitologyParasitology


  • Biting flies
  • Flea allergy dermatitis
  • Flea eggs
  • Flea larvae
  • Flea pupae
  • Fleas
  • Lice
  • Mosquitoes
  • Ticks

Side effects may include signs of skin irritation such as redness, scratching or other signs of discomfort. Gastrointestinal signs such as vomiting or diarrhea have also been reported. Do not use K9 Advantix® II on cats.

K9 Advantix® II for Dogs FAQs

How is K9 Advantix® II different from K9 Advantix®?

What are the packaging specifications for K9 Advantix® II?

Why should I prescribe K9 Advantix® II for my patients over other brands?

What are the active ingredients in K9 Advantix® II?

What are the dosage and frequency guidelines for K9 Advantix® II?

How long does it take for K9 Advantix® II to work on fleas?

Can K9 Advantix® II be applied more than once per month?

Are there additional resources I can direct my clients toward?

Tick repellancy


See how K9 Advantix® II repels ticks and helps keep dogs protected.

K9 Advantix is a registered trademark of Bayer.