Trifexis Chewable Tablet for Dogs, 60.1-120 lbs, (Brown Box), 12 Chewable Tablets (12-mos. supply)

Have a Chewy account?
Sign in to quickly add pet health details.
$299.48 First Time Autoship Price
this order
Save 35% (up to $20) today when you set up Autoship. 

$303.51 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$319.48 Chewy Price
($26.62 /ea)
Save $35.50 (-10%)
$354.98 List Price
Promo, Save 20% on first Rx order with code
Promo, Save 20% on first Rx order with code RX20

In Stock
FREE delivery
Usually arrives in 3-5 days
Prescription approval made easy
We’ll reach out to your vet clinic.

No interest if paid in full in 6 months. .

Medications ship separately. Delivery times may vary.

About This Item

Details

  • Trifexis delivers 5-in-1 protection from heartworms, fleas & 3 more intestinal parasites in dogs 5 to 10 lbs.
  • In a well-controlled laboratory study, Trifexis started to kill fleas in 30 minutes and demonstrated 100% effectiveness within 4 hours.
  • Prevents heartworm disease and treats & controls roundworm, hookworm & whipworm infections.
  • Beef-flavored tablets for easy dosing
  • Protecting dogs from parasites for nearly 10 years, 272 million doses distributed (Elanco Animal Health, data on file)

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
Shop Now

10.1 - 20 LBS
Shop Now

20.1 - 40 LBS
Shop Now

40.1 - 60 LBS
Shop Now

60.1 - 120 LBS
Shop Now

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.
Shop Trifexis
4.6
Rated 4.6 out of 5 stars
1388 Ratings

Customers Mention

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

Ease of Use

86% Positive

Effectiveness

84% Positive

Ingredients

84% Positive

Long-Term Benefits

84% Positive

564 Customer Reviews



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

Rated 1 out of 5 stars
By Deborah on Nov 22, 2025

Difficult to give NOT CHEWABLE OR SWALLOWABLE!

Dog refused the "chewable" tablet, so crushed into sft food and she refused it. Cut into fourth, and gave it into her throat. Its hard, and cut, edges are sharp

Dog refused the "chewable" tablet, so crushed into sft food and she refused it. Cut into fourth, and gave it into her throat. Its hard, and cut, edges are sharp. Was painful to swallow. Had purchased 6 months. Gave with peanut butter and tried with cheese. Had to change to a different prescribed med. Wasted $$$ because meds are nonreturnable by law. I refuse to continue this med.


Rated 4 out of 5 stars
By Michelle on Nov 11, 2025

Uploading Rx Inquiry

Hi. Love your site's UI and rates for inventory. One star off for Pharmacy connection with Vet. There were way too many calls that needed to be made between the

Hi. Love your site's UI and rates for inventory. One star off for Pharmacy connection with Vet. There were way too many calls that needed to be made between the vet and pharmacy, here. It's 2025. Customers need to be able up to upload vet rx's via pdf into our portal. I understand there being a delay to verify info. I wouldn't mind a day or to for review, post upload. Please work on making this a reality. Thank you, kindly.


Rated 5 out of 5 stars
By Bray on Dec 1, 2025

Love Chewy & Monthly Flea Med Delivery

Sure takes a lot off your mind when you get your delivery of your pups flea meds. First you’d have probably forgot to order it so subscriptions sure help! Plus it

Sure takes a lot off your mind when you get your delivery of your pups flea meds. First you’d have probably forgot to order it so subscriptions sure help! Plus it tells me when they’re due each month as I forget everything in my busy schedule. Great prices! Fast Efficient Shopping & Shipping! A+


Rated 2 out of 5 stars
By Stacy on Dec 15, 2025

Recommended by my vet.

The mosquitoes have been told by my vet have interbred with tougher ones blown in with hurricanes and right with the number of dogs he’s seeing infected we should

The mosquitoes have been told by my vet have interbred with tougher ones blown in with hurricanes and right with the number of dogs he’s seeing infected we should be using Simparica TRIO. It covers the 3 new strains mosquitoes carry.


Rated 4 out of 5 stars
By Sarah on Jan 10, 2026

Missing stickers

All fine except it was missing the monthly reminder stickers to put on your calendar. Never had that problem before but otherwise seems good.

All fine except it was missing the monthly reminder stickers to put on your calendar. Never had that problem before but otherwise seems good.


Rated 4 out of 5 stars
By Lindsay on Nov 16, 2025

Works but tastes awful

This seems to be working well at keeping fleas off my guy but he will NOT eat it. I even tried hiding it in canned chicken and he refused. Having to shove it down

This seems to be working well at keeping fleas off my guy but he will NOT eat it. I even tried hiding it in canned chicken and he refused. Having to shove it down his throat isn't fun.


Rated 5 out of 5 stars
By Marie on Oct 28, 2025

Problem with Order

I reached out for a problem with a recent order and the chat option was prompt, easy, and very quickly offered an acceptable remedy. Chewy is a great company with

I reached out for a problem with a recent order and the chat option was prompt, easy, and very quickly offered an acceptable remedy. Chewy is a great company with outstanding customer service.


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

Sorting out my undelivered package due to driver not finding my address

After contacting Chewy we were so impressed as to the way the problem was handled! Less than 24 hours our package was delivered and Mr Shelby and mummy n daddy are

After contacting Chewy we were so impressed as to the way the problem was handled! Less than 24 hours our package was delivered and Mr Shelby and mummy n daddy are happy!!!! Thank you Chewy for resolving the problem!


Rated 3 out of 5 stars
By Camille on Jan 18, 2026

My dog is still itching after treatment

Not sure if the formula is strong enough for Florida fleas

Not sure if the formula is strong enough for Florida fleas


Rated 5 out of 5 stars
By Sarah on Oct 9, 2025

Quick Delivery, Competitive Price

Appreciate how quickly the order was filled and that I got the item for a price competitive with other retailers.

Appreciate how quickly the order was filled and that I got the item for a price competitive with other retailers.