Trifexis Chewable Tablet for Dogs, 10.1-20 lbs, (Orange Box), 6 Chewable Tablets (6-mos. supply)

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About This Item

Details

Your furry friend must have a current heartworm test result on file with your veterinarian in order to be prescribed heartworm medication. Please visit your veterinarian to have this test performed annually to protect your four-legged friend. Trifexis (spinosad + milbemycin oxime) is the monthly, beef-flavored tablet prescribed to kill fleas and prevent flea infestations, prevent heartworm disease, and treat and control adult hookworm, roundworm and whipworm infections in dogs. With flea medicine, heartworm preventive and intestinal parasite control in one, get the peace of mind that comes from protecting your canine companion.We directly source prescription medications from manufacturers and wholesale distributors registered with the FDA and licensed by applicable state boards. Guaranteed genuine, and where applicable, backed by the manufacturer.

Ingredients

Instructions

FAQ

Learn More About Trifexis From Our Team of Experts

About Trifexis

Dosed By Weight

Trifexis comes in five different strengths to provide custom-tailored dosing for a wide range of dogs. Just one tablet provides the correct amount your pup needs to protect him for a whole month from 5 different types of parasites. Trifexis works for dogs 8 weeks and older, with dosing for dogs from 5 pounds to 120 pounds—and beyond!
Dogs 5 to 10 lbs, 140mg. Dogs 10.1 to 20 lbs, 270mg. Dogs 20.1 to 40 lbs, 560mg. Dogs 40.1 to 60 lbs, 810mg. Dogs 60.1 to 120 lbs, 1620mg. Dogs more than 120 lbs, administer the appropriate combination of tablets.

5 - 10 LBS
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10.1 - 20 LBS
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20.1 - 40 LBS
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40.1 - 60 LBS
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60.1 - 120 LBS
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Indication

Trifexis prevents heartworm disease. Trifexis kills fleas and prevents flea infestations, and treats and controls adult hookworm, roundworm and whipworm infections in dogs and puppies 8 weeks and older and 5 pounds or more.

Important Safety Information

The use of ivermectin at higher than FDA-approved doses at the same time as Trifexis can result in serious side effects. Treatment with fewer than three monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. Prior to administration of Trifexis, dogs should be tested for existing heartworm infection. Use with caution in breeding females. The safe use of Trifexis in breeding males has not been evaluated. Use with caution in dogs with pre-existing epilepsy. The most common adverse reactions reported are vomiting, decreased activity, itching, decreased appetite, and diarrhea. To ensure heartworm prevention, observe your dog for one hour after administration. If vomiting occurs within an hour of administration, redose with another full dose. Puppies less than 14 weeks of age may experience a higher rate of vomiting. For complete safety information, please see Trifexis product label or ask your veterinarian.
Trifexis Product Label

About Trifexis

Trifexis is a once-a-month, beef-flavored tablet that provides broad protection against a range of parasites. It kills fleas, prevents flea infestations, prevents heartworm disease, and treats and controls adult hookworm, roundworm, and whipworm infections. Protect your dog with convenient parasite protection that lasts all month long.
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4.7
Rated 4.7 out of 5 stars
1845 Ratings

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

88% Positive

Effectiveness

89% Positive

Ingredients

89% Positive

Long-Term Benefits

90% Positive

731 Customer Reviews



Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Erin on Oct 12, 2025

Love this product!

I love that I give my dog one pill for fleas & heart worms. I also love that there is no greasy yuck on my dogs back that I could put my hands in.I have had 3 dogs

I love that I give my dog one pill for fleas & heart worms. I also love that there is no greasy yuck on my dogs back that I could put my hands in.I have had 3 dogs on this & they have never had fleas & never had heart worms which is the most important thing, but also Trifexis does not charge a fortune for a great product.


Rated 4 out of 5 stars
By Linda on Sep 19, 2025

Prompt delivery

Easy to give once a month, but i recently discovered fleas all over her. I know they die within 4 hrs. after biting her, but she was miserable and had to give her

Easy to give once a month, but i recently discovered fleas all over her. I know they die within 4 hrs. after biting her, but she was miserable and had to give her a bath and later repeat with a flea sampoo. She still has a few!


Rated 2 out of 5 stars
By Megan on Aug 8, 2025

Chewable?

It sucks that these work so well because I hate giving these "tablets." My dog won't chew them, so we have to cut them in quarters and give them as pills. It's so

It sucks that these work so well because I hate giving these "tablets." My dog won't chew them, so we have to cut them in quarters and give them as pills. It's so stressful. All three of my dogs get them and not one of them will take them as a treat. The low stars are for the fast that they call them chewable. Please make an actual pill form, because I really do like your product.


Rated 2 out of 5 stars
By Maurice on Sep 21, 2025

How much is too much

Although Trifexis is a terrific medication, the price is going into orbit. It is double what I paid seven years ago. I know medication costs have increased over

Although Trifexis is a terrific medication, the price is going into orbit. It is double what I paid seven years ago. I know medication costs have increased over time but this is getting too much.


Rated 4 out of 5 stars
By Lois on Aug 30, 2025

Works great and don't cost a small fortune

I have used this for the last 10 years never had a flee on him. The only thing is I wish it was something that it would make it taste better so they would eat it

I have used this for the last 10 years never had a flee on him. The only thing is I wish it was something that it would make it taste better so they would eat it instead of me having to crush it up and hide it in their food .


Rated 5 out of 5 stars
By Elizabeth on Sep 24, 2025

Easy ordering and quick delivery

I find this to be the easiest and most cost effective way to get this medicine. My vet simply sends in a script, and I have my bi-annual authorship order ready.

I find this to be the easiest and most cost effective way to get this medicine. My vet simply sends in a script, and I have my bi-annual authorship order ready.


Rated 1 out of 5 stars
By Rebecca on Oct 8, 2025

Not working for fleas.

For the past 3 months Ludo has been covered in fleas. Its time to change his treatment. Poor boy can't handle it anymore.

For the past 3 months Ludo has been covered in fleas. Its time to change his treatment. Poor boy can't handle it anymore.


Rated 5 out of 5 stars
By MARY on Oct 18, 2025

Time Saving!

This medicine was really good and I appreciate knowing that I will receive it so I can keep my pups safe!

This medicine was really good and I appreciate knowing that I will receive it so I can keep my pups safe!


Rated 5 out of 5 stars
By Tammy on Oct 5, 2025

Coupon!

My Bella has been on this since she was a pup and she’s 12 years old and hasn’t ever had a problem. Work as they say.

My Bella has been on this since she was a pup and she’s 12 years old and hasn’t ever had a problem. Work as they say.


Rated 1 out of 5 stars
By Monica on Jul 14, 2025

Delivery

I was sitting in my living room and I heard a loud thump at my door. I looked at my camera and the delivery guy stood at the bottom of my front steps and threw the

I was sitting in my living room and I heard a loud thump at my door. I looked at my camera and the delivery guy stood at the bottom of my front steps and threw the package at my door. When I got the package, it was literally dented up from being thrown so hard! Your delivery people need to do better!