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
Our regular price:
This item is on sale!
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.
Other Customers Also Bought for their Pet
- Kills fleas and ticks within 12 hours
- Kills flea eggs, pupae, larvae, and adults for 30 days
- Kills and protects against mosquitoes, which are the primary cause of heartworm
- Protect your dog from a variety of disease carrying ticks
- Kills fleas, and controls American Dog Tick infestations
- Once a month spot on to prevent internal and external parasites including heartworm
- Treats and controls ear mites and sarcoptic mange
- Water-based, pH balanced, and non-irritating
- Guaranteed not to rinse out flea and tick medicine
- Lathers up quick and rinses out easily
- Fresh, clean fragrance
Rated 4.8 out of 5 by 222
Rated 5 out of 5 My dogs love it
My two dogs use this monthly. They can not take whole tab at one time so I have to cut in half and give each one two halves separately. They used to just take the tabs au natural but now they both expect their meds in Pill Pockets so that's how they get their Comfortis... It's less expensive buying from Petcarerx then getting them from my own vet.
March 23, 2015
Rated 5 out of 5 by Melodie Great solution for cat fleas!
Our poor cat was acting unusual which I finally realized it was from our dog having fleas. Now the cat had them! This product works within 30 minutes and REALLY works great! FYI: Make sure your cat eats before/after giving the medication.
February 21, 2015
Rated 5 out of 5 by Spencesmom2 This product is easy to use.
This product is easy to give. My dog thinks it is one of his
favorite treats. It works fast and continues to work all month long.
February 18, 2015
Rated 5 out of 5 by Green119 Very easy to admimister, no mess
I use this product on my dogs and cats. It is effective the following day I administer it.
January 31, 2015
Rated 4 out of 5 by dgerm Works great for the first 20 days
I started my mixed Yorkie/Dachshund on Comfortis two months ago. The first time she didn't eat enough with the medicine and several hours later vomited a little. The second dose I was more careful to give on a full stomach and she did fine. It works fast and the fleas are gone but not for the full month. About 20 days and she is starting to itch. I still prefer it over the topical treatments because they were no better for duration, they are slower to start working and messy!
December 23, 2014
Rated 5 out of 5 by Ophelia A-Mazing
I have an indoor cat and never thought that she could ever get fleas. Unfortunately, my ignorance resulted in a horrific infestation of my home and beloved pet. I tried the internet "home remedies" to no avail, and my poor kitty was absolutely miserable. After a quick trip to the vet, she recommended this product and by the next day my cat was her normal self. I had tried baths, flea combs, dishsoap, sprays.....none worked. Comfortis killed it (literally). THANK YOU!!
December 7, 2014
Rated 5 out of 5 by Numsa Love this product
I've been using Comfortis for several months now and have had no issues with fleas whatsoever. My dog takes it just fine, no side effects that I've noticed. I would recommend this product.
November 23, 2014
Rated 5 out of 5 by Huckabee One of my dogs eats fast, the other I have to hide the taste in something strong like sardines.
Other products killed flees. Only Comfortis stopped Ticks for more than a month.
November 22, 2014
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.
In stock! Order now!
Comfortis Flea Preventative
based on 222
As a Complete Care Plan member, enjoy the following benefits:
- All of your pet prescriptions at wholesale pricing
- Save 25% every time you go to the vet (through PetAssure)
- Convenient pickup at over 60,000 local pharmacies, including CVS, Target, Walgreens, and Walmart
- 20% off everything at PetCareRx.com
- $50 off your first dog sitter booking with Rover.com
- Guaranteed savings in your first year as a member
- And much more...
All this for only $9.99/month
Would you like to upgrade?
Add at Regular Price