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

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$116.89 Autoship Price
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$123.04 Chewy Price
($41.02 /ea)
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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

One Monthly Chew, Triple Protection

Simparica Trio is the first FDA-approved monthly chewable that protects your dog against heartworm disease, ticks, fleas, roundworms, and hookworms.

FDA-Approved to Prevent Lyme Infections*

Simparica Trio does the job of 2 or 3 preventatives with a once-a-month chew. It is the only FDA-approved combination preventative to prevent Lyme infections by killing deer ticks.

Loved by Dogs

Savory pork liver-flavored chew − a study found 9 out of 10 dogs ate Simparica Trio voluntarily. [1]

Approved for Puppies

Simparica Trio is approved for puppies as young as 8 weeks old, weighing at least 2.8 lbs.

About Simparica Trio

Simparica Trio comes with a 100% satisfaction guarantee on prevention. Ask your vet if Simparica Trio is right for your dog.

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. 

References:

*Data on file, Zoetis Services LLC.

1. Study A161C-US-15-634. Data on file. Zoetis Inc. STR-00709

4.8
Rated 4.8 out of 5 stars
17666 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

5231 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 Anissa on Feb 6, 2026

Works SO well

My pup had fleas because she spends a lot of time laying in the grass. Every time I'd comb her with the flea comb, I was finding multiple fleas. I gave her the first

My pup had fleas because she spends a lot of time laying in the grass. Every time I'd comb her with the flea comb, I was finding multiple fleas. I gave her the first dose in the afternoon and when I went to comb her the next morning, it was the first time I found no fleas. This seems to work reallyyyy well. I'm excited to give her the next dose hehe.


Rated 5 out of 5 stars
By Jennifer on Jan 6, 2026

Delicious Treat-Like!

My Golden Retriever hates medicine, but loves treats. We have tried other medicines in the past for heartworm, ticks, fleas, etc. and it would either get chewed

My Golden Retriever hates medicine, but loves treats. We have tried other medicines in the past for heartworm, ticks, fleas, etc. and it would either get chewed and spit out or thrown up. This soft chewy tablet looks a lot like his training treats so he will sit, shake, lay down, etc. - all for medicine that he doesn't even know is medicine! I hated using the topical tick/flea prevention because my dog has the longest hair and I was never certain I was getting it applied properly. 1 monthly tablet and now all of those worries have disappeared. Worth every cent :)


Rated 5 out of 5 stars
By Molly on Jan 28, 2026

Working with Chewy is so easy!

I had to chat with a Chewy rep because I ordered the wrong weight for my dog. It was so easy! Someone answered immediately and was knowledgeable and able to help!

I had to chat with a Chewy rep because I ordered the wrong weight for my dog. It was so easy! Someone answered immediately and was knowledgeable and able to help! They ended up transferring me to the pharmacy tech who was also lovely and very helpful! I would absolutely recommend getting this from chewy!


Rated 5 out of 5 stars
By JENNIFER on Jan 16, 2026

Superb customer service

When our order when taken off our property shortly after being delivered, I contact customer support and they had a replacement shipment placed so swiftly, it virtually

When our order when taken off our property shortly after being delivered, I contact customer support and they had a replacement shipment placed so swiftly, it virtually arrived a day later. Coupled with the personalized correspondence, I continue to be so impressed with chewy’s service personnel. Sets a high bar for all other retailers, thank you!


Rated 5 out of 5 stars
By Shirley on Jan 17, 2026

Process handling was done very professionally.

However, I have 1 comment. The order appeared to be bounced around the country by FedEx. I personally do not have any respect for this company as they don't always

However, I have 1 comment. The order appeared to be bounced around the country by FedEx. I personally do not have any respect for this company as they don't always deliver to my front door as they are requested to do. I am concerned since this is a prescription medication, their timeliness in delivery is most concerning. Just a thought.


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

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.


Rated 5 out of 5 stars
By Jane on Jan 2, 2026

German Shepherd needed flea & Tick prevention

Chewy and my Vet approved and I started her medication the next day when I picked the medication up at my Vets Nearby office. All dogs need year round protection

Chewy and my Vet approved and I started her medication the next day when I picked the medication up at my Vets Nearby office. All dogs need year round protection unless they only spend time indoors my opinion only. Prevention is very important. Thanks Chewy! I received the prescription a few hours later. Simpatico Trio is my choice even though my girl spends time indoors she still has time outdoors when we go on Walks.


Rated 5 out of 5 stars
By Elizabeth on Feb 2, 2026

My veterinarian prescribed

Flea, tick and heartworm med that has worked great for both our dogs. They've been free of fleas and ticks and heartworms! Awesome and well-priced. Buying the

Flea, tick and heartworm med that has worked great for both our dogs. They've been free of fleas and ticks and heartworms! Awesome and well-priced. Buying the medications separately are more expensive and then you have to deal with 3 pills at a time!


Rated 5 out of 5 stars
By Corinne on Feb 10, 2026

Chewy made it easy!

This was finally a smooth process after too many phone calls and struggles getting this from my local vet. With a newborn at home and not much extra time, I needed

This was finally a smooth process after too many phone calls and struggles getting this from my local vet. With a newborn at home and not much extra time, I needed this to finally just work and Chewy came through as always.


Rated 5 out of 5 stars
By Celeste on Feb 12, 2026

Apparently pretty tasty

My vet recommended these, and I was happy to see it was a flavored chewable tablet. Our dog happily ate it directly from the package--no need to hide the pill in

My vet recommended these, and I was happy to see it was a flavored chewable tablet. Our dog happily ate it directly from the package--no need to hide the pill in cheese as we do with other medications.