Simparica Trio Chewable Tablet for Dogs, 44.1-88 lbs, (Green Box), 3 Chewable Tablets (3-mos. supply)

Have a Chewy account?
Sign in to quickly add pet health details.
$73.04 First Time Autoship Price
this order
Save 50% (up to $50) today when you set up Autoship. 

$116.89 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$123.04 Chewy Price
($41.02 /ea)
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 on PayPal purchases of $149+. .

Medications ship separately. Delivery times may vary.

About This Item

Details

  • Triple Protection in One Monthly Chew: Simparica Trio provides complete flea and tick prevention for dogs plus protection against heartworms and intestinal worms. For puppies eight weeks and older weighing at least 2.8 lbs.
  • Heartworm Protection: Proven 100% effective against heartworm disease in studies supporting FDA approval.
  • Kills 6 Types of Ticks & Helps Prevent Lyme Infections: The only combination preventative proven to kill Gulf Coast, Deer, American Dog, Lone Star, Brown Dog, and Asian Longhorn ticks.
  • Stops Fleas & Treats Intestinal Worms: Kills fleas before they lay eggs to prevent infestations. Also treats and controls roundworms and hookworms.
  • Easy Once-a-Month Dosing: Give with or without food. Backed by a 100% satisfaction guarantee on prevention.

Ingredients

Instructions

FAQ

Learn More About Simparica Trio From Our Team of Experts

Don’t Just Protect. Triple Protect.

Simparica Trio is the first FDA-approved monthly chew that protects dogs against heartworm disease,† ticks,* fleas,‡ and intestinal worms.§ One tasty pork liver-flavored chew, given once a month, does the job of 2 or 3 preventatives.

The #1 Vet Prescribed Combo Preventative

Simparica Trio is the #1 vet prescribed combo preventative** and is FDA-approved to protect your dog against three categories of parasites. It treats and controls 6 kinds of ticks, including the deer tick that may carry Lyme disease.

Protected 15 Million Dogs & Counting

Trusted by veterinarians and pet parents, Simparica Trio has protected over 15 million dogs and counting.†† A study found that 9 out of 10 dogs readily ate Simparica Trio, a pork-liver flavored chew.‡‡ Plus, Simparica Trio comes with a 100% satisfaction guarantee and is approved for puppies as young as 8 weeks old, weighing at least 2.8 lbs.

Protect Your Dog & Earn Rewards From Zoetis

Your 6- or 12-count Simparica Trio purchase may be eligible for Petcare Rewards points. Redeem your points for Rewards toward future veterinarian care and more! Learn More at zoetispetcare.com/rewards

About Zoetis Simparica Trio

At Zoetis, we’ve helped pets live their best lives for over 70 years. Zoetis offers a comprehensive range of products to support your pet’s health—from pest prevention and pain management to allergic itch relief and more. Know that we’ll always be here for you and your pet, no matter what.

Shop Simparica Trio

IMPORTANT SAFETY INFORMATION

Use with caution in dogs with a history of seizures. Simparica Trio contains sarolaner, a member of the isoxazoline class, which has been associated with neurologic adverse reactions, including tremors, ataxia, and seizures in dogs with or without a history of neurologic disorders. The safe use of Simparica Trio has not been evaluated in breeding, pregnant, or lactating dogs. The most frequently reported adverse reactions in clinical trials were vomiting and diarrhea. See full Prescribing Information at SimparicaTrioPI.com.

*For the treatment and control of Gulf Coast Tick (Amblyomma maculatum), Deer Tick (Ixodes scapularis), American Dog Tick (Dermacentor variabilis), Lone Star Tick (Amblyomma americanum), Brown Dog Tick (Rhipicephalus sanguineus), and Asian Longhorn Tick (Haemaphysalis longicornis). Studies to support FDA approval showed that 1 dose provided 100% protection against heartworm disease. Simparica Trio starts killing fleas within 4 hours. For the treatment and control of roundworm (immature adult and adult Toxocara canis and adult Toxascaris leonina) and hookworm (*L4, immature adult, and adult Ancylostoma caninum and adult Uncinaria stenocephala) infections. Indicated for the prevention of Dipylidium caninum (tapeworm) infections by killing fleas.

REFERENCES

**Data on file. ZMR: Kynetec PetTrak US FTH National Data January 10, 2025. ††Simparica Trio – 15M Dogs and Counting, PetTrak Kynetec Veterinary Channel Review Q4, 2024. ‡‡Study A161C-US-15-634. Data on file. Zoetis Inc.

STR-00709R1

4.8
Rated 4.8 out of 5 stars
20126 Ratings

Customers Mention

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

Ease of Use

90% Positive

Effectiveness

89% Positive

Ingredients

87% Positive

Long-Term Benefits

88% Positive

5861 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 Alyssa on Nov 3, 2025

Great product

This product is worked great for all three of my boys. Two bean mixed with lab and pitbull one being a purebred yellow lab. The two youngerones are substantially

This product is worked great for all three of my boys. Two bean mixed with lab and pitbull one being a purebred yellow lab. The two youngerones are substantially smaller and they didn’t do so good on the Cordelia Quattro so we switched them to this, and it has turned out much better for their stomachs. The only issue I have is with FedEx anytime I get a package from them. It takes me about an hour to an hour and a half to find said package and then when I find said package it is crushed. Nothing was damaged because it is take meds, of course but my only issue simply not being able to find the package and it being damaged every time I it.

By Alyssa on Nov 3, 2025
Buddy
Buddy

Rated 5 out of 5 stars
By Kathleen on Jun 22, 2025
Anakin Skywalker
Anakin Skywalk...

The process was so easy

I ran out of the monthly flea/heartworm medication my vet had given me months before for my German Shepherd, Anakin Skywalker. Because I use Chewy for all my other

I ran out of the monthly flea/heartworm medication my vet had given me months before for my German Shepherd, Anakin Skywalker. Because I use Chewy for all my other pet needs with an automatic delivery, I decided to try their pharmacy because it was cheaper than the vet. I didn’t have a current prescription but Chewy said they’d call my vet and set it up. Turns out, my vet now recommends a different brand, Simparica Trio, than the previous one I had. The vet’s office called, told me they had discussed the request with the Chewy people, and I needed a heartworm test before giving a new prescription to Chewy. They also had an opening for a quick appointment. The rest was completed between Chewy and the Vet’s office, and the medicine was delivered w/in the same week. Easy peasey! It’s chewable and he has no adverse effects. I’m going to add it to the automatic delivery.

By Kathleen on Jun 22, 2025
Anakin Skywalker
Anakin Skywalk...

Rated 5 out of 5 stars
By Scott on Aug 27, 2025
Henry
Henry

Top tier professionals doing what top tier professionals always do.

Your representative arranged for Henry's and Titos Simparica Trio shipments...Henry's needed to be shipped immediately. However, since our Molly crossed the Rainbow

Your representative arranged for Henry's and Titos Simparica Trio shipments...Henry's needed to be shipped immediately. However, since our Molly crossed the Rainbow Bridge on March 4, 2025, her untouched 6-month supply could be used by Tito. So, she delayed Tito's autoship according. Additionally, I told her that our Dixie crossed the Rainbow Bridge, on August 12, 2025 and needed to cancel her 7+ Purina Pro Plan autoship program. Not only did she handle that, on Monday, a beautiful memorial tribute to Dixie arrived from the wonderful folks at Chewy. I'm certain she had a hand in that, as well. I can't thank y'all enough. You're top shelf in my book. Scott

By Scott on Aug 27, 2025
Henry
Henry

Rated 5 out of 5 stars
By Cynthia on Jan 27, 2025

Shipping time

It was time for his heartworm pill it was on autoship but it was delivered they say I never received it don't know what happened to it I called them they never batted

It was time for his heartworm pill it was on autoship but it was delivered they say I never received it don't know what happened to it I called them they never batted a eye or question anything sent me another right away I was not charged anything I love this place that was amazing cause his pill for one month is 45$ most places would have made me buy another or had to investigate what happened package it would have taken weeks and he would have missed his heartworm pill he is being treated for strong heartworm positive he can't be late at all it's called slow kill method so they actually care about my baby more than the money and here is the finally I never told the phone person this till then end of conversation and when it was done so he didn't know how serious it was they truly care about doing the right thing

By Cynthia on Jan 27, 2025

Rated 5 out of 5 stars
By Jasmine on Dec 5, 2024

2 thumbs up from a vet tech!!

being a forgetful person, I live for the convenience of having a 3-in-1 preventative. haven’t had any issues with fleas, ticks, or worms. it is quite pricey, but

being a forgetful person, I live for the convenience of having a 3-in-1 preventative. haven’t had any issues with fleas, ticks, or worms. it is quite pricey, but the benefits GREATLY outweigh the cost. Just a PSA to everyone out there saying it doesn’t work: YOU HAVE TO CONSISTENTLY AND REGULARLY ADMINISTER THIS TO YOUR DOGS as SCHEDULED. This means the CORRECT DOSAGE for your pets WEIGHT, EVERY MONTH, as scheduled. you cannot give it sporadically. only give doses every other month? give only 1/2 tablet? if you answered yes to either of these hypothetical questions, then YOU are the reason that your dog has fleas, ticks, or contracts heart worms. this medication works if you follow the basic instructions. i’m so tired of per owners complaining about wasting their money on this, only to be told that they save money by splitting the SINGLE prescription doses between their MULTIPLE, VARYING IN SIZE dogs. (like a great dane and their frickin teacup chihuahua sharing the same weight range dose???) ALSO: fun fact for ya, zoetis will pay for treatment if it was given as prescribed, and your pet did contract heart worms.

By Jasmine on Dec 5, 2024

Rated 5 out of 5 stars
By Barbara on Sep 19, 2025
Molly
Molly

My Dog Ate It!

I adopted a 5-6 year old lab mix about 7 months ago. She is EXTREMELY aware of any tablets that contain medication. I’ve tried other brands of heartworm and flea/tick

I adopted a 5-6 year old lab mix about 7 months ago. She is EXTREMELY aware of any tablets that contain medication. I’ve tried other brands of heartworm and flea/tick preventatives - cutting them up and hiding in a hotdog or crushing and adding to wet food - but it was always a struggle. I bought a single dose of Simparica Trio and she ate the whole tablet with no hesitation! Whew!

By Barbara on Sep 19, 2025
Molly
Molly

Rated 5 out of 5 stars
By Vicki on May 10, 2025

No fleas, no ticks, but MOST importantly, protection from heart worm.

Our Calli is a rescue, (she also rescued us from extreme grief of losing our beautiful pibble, Taylor). Calli lived on the streets of a neighboring county for two

Our Calli is a rescue, (she also rescued us from extreme grief of losing our beautiful pibble, Taylor). Calli lived on the streets of a neighboring county for two years. When rescued by a fantastic organization, she had heart worm. Our baby successfully battled that, and now has a clean bill of health. We’re confident her meds protect her from mosquitoes, fleas & ticks. We’re in southern, coastal Georgia so it’s all a year round problem.

By Vicki on May 10, 2025

Rated 3 out of 5 stars
By Diane on Jan 7, 2026
Koda
Koda

1 tablet covers multi issues

Koda, almost 9 yrs old, likes the taste & chews tab right up but 3 yrs ago he tested positive for 2 of the 4 Lymes Diseases. I still continue with it every month,

Koda, almost 9 yrs old, likes the taste & chews tab right up but 3 yrs ago he tested positive for 2 of the 4 Lymes Diseases. I still continue with it every month, pray & hope Koda stays strong. Has anyone else had their dogs test positive while on this? He is such an amazing & intelligent dog.

By Diane on Jan 7, 2026
Koda
Koda

Rated 5 out of 5 stars
By christine on Apr 12, 2025

Using other than cash or check payments

“Hope” has been on Simparica Trio since she was a pup. I chose to keep her on this medicine when we left K9s for Warriors last April. I do not like on line purchasing

“Hope” has been on Simparica Trio since she was a pup. I chose to keep her on this medicine when we left K9s for Warriors last April. I do not like on line purchasing but since vets do not have their own pharmacies any longer I had to give in this intrusive way of payment or my precious poochie would not get her needs met. To make a very long story short, I telephoned Chewy and the rep. made my transaction easier than I had stressed about. Hope has a six month supply now.

By christine on Apr 12, 2025

Rated 3 out of 5 stars
By Maria on Jun 11, 2025
DaVinci
DaVinci

Disappointed with customer service

I had called in and spoke to one of your customer service Representatives regarding a coupon that I received in the mail for a chewy Pharmacy discount of 30%. She

I had called in and spoke to one of your customer service Representatives regarding a coupon that I received in the mail for a chewy Pharmacy discount of 30%. She assured me that she added the discount to daVinci's prescription that I was going to be receiving in a few days however the discount was never taken off. This is the first time I have ever had an experience like this with Chewy. As far as the product is concerned I am very pleased with the product and with your ability to continually renew the prescription on time

By Maria on Jun 11, 2025
DaVinci
DaVinci