At a Glance
Comfortis is safe for use in dogs and cats
Prevents flea infestations for a full 30 days
Kills fleas within 30 minutes
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Comfortis is the first once-a-month chewable flea preventative approved by the FDA. Starting to work within just 30 minutes, this tasty, beef-flavored tablet provides the same protection as a topical treatment without any of the mess. While other flea treatments may simply kill fleas on contact, Comfortis actively repels fleas for a full 30 days. Since there is no mess on their fur, there is no time period where they need to be kept away from children or other pets either. And thanks to Comfortis' beef flavor, pets gobble it up with ease. Safe for use on cats and dogs 14 weeks and up, start making flea medication a pleasant experience today, with Comfortis chewable tablets.
Side Effects and Warnings
Comfortis side effects are associated most commonly with vomiting. Other possible reactions are depression, decreased appetite, diarrhea, itching, trembling, hypersalivation, and seizures. Comfortis may be used concurrently with heartworm prevention products, as they are directed.
Ask your veterinarian or consult with one of our pet care specialists at 1-800-844-1427.
This information is for informational purposes only and is not meant as a substitute for the professional advice of, or diagnosis or treatment by, your veterinarian. Always seek the advice of your veterinarian or other qualified professional with any questions you may have regarding a medical condition. Never disregard or delay seeking professional advice due to what you may have read on our website. Our medications are FDA approved and/or EPA regulated when and as required by law.
Dogs - 5-10 lbs. or Cats - 4-6 lbs., 6 months supply
Dogs - 10-20 lbs. or Cats - 6-12 lbs., 6 months supply
Dogs - 20-40 lbs. or Cats - 12-24 lbs., 6 months supply
Dogs - 40-60 lbs., 6 months supply
Dogs - 60-120 lbs., 6 months supply
Dogs - 3-5 lbs. or Small Cats, 2-4 lbs., 6 months supply
Store Comfortis at room temperature.
Administer correct dose monthly, as prescribed by your veterinarian, with food, year-round without interruption. If you miss a dose, immediately administer Comfortis and resume regular monthly dosing.
Rated 4.8 out of 5 by 231
Rated 4 out of 5 by Jtpgsu Good product
I started using this when the spot on products were no longer keeping my dog free of fleas and constant scratching. After moving to this, she does less scratching and we have not had any flea issues. I will keep using this product.
November 21, 2015
Rated 5 out of 5 by Mumm Practical and effective!
No more fleas on my Toby! I am very happy about this product. We used to use Frontline, but it is no longer effective!
November 6, 2015
Rated 5 out of 5 by Maemom14 Great product
Product kills fleas within an hour. We got fleas from a trip to the park and I was able to get things under control quickly with this product.
October 19, 2015
Rated 4 out of 5 by rusty123 Need to add tick protection
Seems to work regarding fleas, but our dog got a tick within a week of first tablet. I know Comfortis only advertises flea protection, but if possible, adding tick protection would be a great help. And, this stuff is expensive requiring a vet prescription. May have to find alternative.
October 8, 2015
Rated 5 out of 5 by tiger good stuff
This has been the worst year for the fight the fleas. I used to use Advantix. that didn't even work. this is the best stuff out there.
September 12, 2015
Rated 5 out of 5 by Poohbear01 This Product Works!
Our two Dogs and one Cat had been on Advantage for years. A couple of years ago it basically quit working! We had a Flea Investation in our Florida and Georgia home and our pets were going crazy.
Our Vet recommended Comfortis and we bombed both our homes for a few hours each. Within a day everything was back to normal...no scratching, no fleas.
May 26, 2015
Rated 5 out of 5 by JNGuitarman Effective and easy to use!
Only one that has been consistently effective. We have used several other brands, most were not effective and messy to use as well.
April 29, 2015
Rated 5 out of 5 by Pammylu Very good price!
This was the first time I ordered from Pet Care RX and I am very pleased with the products and the service.
April 23, 2015
Flea & Tick
Comfortis Flea Preventative
Comfortis is the first beef-flavored chewable that both kills fleas and prevents infestations in your dog or cat for a full 30 days. Comfortis is safe for puppies and kittens as young as 14 weeks.
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Comfortis Flea Preventative
based on 232
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