Bayer advantus™ |Adult Flea Control Soft Chews for Dogs
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Bayer advantus™ for Dogs

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Bayer advantus™ for Dogs
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Starts to kill fleas within 1 hour
Unique soft chew available without a prescription
Contains the active ingredient imidacloprid

Trust the Bayer name for easy-to-give treatment of adult flea infestations on your dog. This flavored soft chew formula kills adult fleas fast - it starts working within 1 hour and achieves 96% effectiveness within 4 hours.

No-mess, no-drip application - administer the soft chew directly from your hand. A single dose kills existing adult fleas, but if your pet should become re-infested, advantus is safe enough to administer as often as once per day. Not a preventive; works only on the adult stage of the flea life cycle. For dogs and puppies 4 lbs of body weight or greater and 10 weeks of age or older.

Dosage: advantus should be administered according to the following schedule. Weigh your dog prior to administration to ensure proper dosage. Do not administer to dogs weighing less than 4 pounds of body weight.

Dog weight
Imidacloprid per soft chew
4 - 22 lbs
one soft chew
7.5 mg
23 - 110 lbs
one soft chew
37.5 mg

Please click on "More Information" for directions and other label information.

More Info
advantus (imidacloprid) soft chew 7.5 mg:
for dogs 4-22 lbs 10 weeks of age and older

advantus (imidacloprid) soft chew 37.5 mg:
for dogs 23-110 lbs and 10 weeks of age and older

Active Ingredients: advantus contains 7.5 mg or 37.5 mg of imidacloprid.

Use: advantus™ kills adult fleas and is indicated for the treatment of flea infestations on dogs and puppies 10 weeks of age and older and weighing 4 pounds or greater.

Warnings: Not for human use. Keep this and all drugs out of the reach of children and pets.

Directions: You should weigh your dog before giving this medication to make sure you are using the right size for your dog. Do not give to puppies younger than 10 weeks of age or to dogs weighing less than 4 pounds. Do not give more than one tablet a day.

Side Effects: Side effects seen with this drug include vomiting, decreased appetite, decreased energy, soft stools and difficulty walking.

Use the table to find the right dose for your dog:
Dosing Table

Body Weight
Soft Chew Strength
4-22 lbs
One soft chew
7.5 mg imidacloprid
23 -110 lbs
One soft chew
37.5 mg imidacloprid

To give advantus, place the soft chew directly in your dog's mouth or allow your dog to take the soft chew from your hand. Watch closely to ensure your dog swallows the soft chew.

A single dose kills adult fleas on your dog. Because advantus does not have an effect on fleas in the environment, your dog may become re-infested with fleas. If your dog becomes re-infested, you can safely repeat treatment as often as once a day. Contact your veterinarian if you have any questions about flea infestations on your dog.

Treat all pets in your household with a flea protection product. advantus should only be given to dogs.

Call Bayer at 1-800-255-6826. To report side effects, call Bayer Veterinary Services at 1-800-422- 9874. For additional information for reporting side effects for animal drugs, contact FDA at 1-888-FDA-VETS or online at

Other Information:

  • Contact your veterinarian if your dog ingests more than the recommended dose of advantus.
  • advantus has not been tested in pregnant or nursing dogs.
  • advantus starts to kill fleas within 1 hour. A study demonstrated that advantus achieves greater than 96% effectiveness against adult fleas within 4 hours.
  • advantus may be used together with other products, including heartworm preventatives, corticosteroids, antibiotics, vaccines, de-worming medications and shampoos.
  • advantus does not protect against ticks or mosquitoes.
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