Simparica Trio Chewable Tablet for Dogs, 11.1-22.0 lbs, (Caramel Box), 6 Chewable Tablets (6-mos. supply)

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$190.29 Autoship Price
(-5%)
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$200.31 Chewy Price
($33.39 /ea)
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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
11107 Ratings

Customers Mention

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

Ease of Use

90% Positive

Effectiveness

90% Positive

Ingredients

88% Positive

Long-Term Benefits

89% Positive

3272 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 Jennifer on Jan 6, 2026

So Easy!

1) Don't get me started on how buying Simparica TRIO via Chewy is a million times cheaper than going through the vet; and 2) Having all of the things (heartworm,

1) Don't get me started on how buying Simparica TRIO via Chewy is a million times cheaper than going through the vet; and 2) Having all of the things (heartworm, fleas, ticks [including Lyme disease-carrying deer ticks], roundworms, and adult hookworms) in 1 soft chewable tablet makes things SO easy for my dog who is an absolute nightmare to give medicine to. Having to only go through the trauma (for me... she's fine) 1x a month rather than multiple is worth every cent.


Rated 1 out of 5 stars
By Emily on Dec 14, 2025

Gave my do a seizure

I did not heed the warning signs and kept giving this to Goma for 3 months. We switched to Modern Animal from her previous vet because of its technology, but for

I did not heed the warning signs and kept giving this to Goma for 3 months. We switched to Modern Animal from her previous vet because of its technology, but for some reason, they would only prescribe Simparica Trio. We are going back to her old vet permanently now. First sign: she wouldn't eat it unless it were wrapped in other food. She was on Bravecto before, that she would take no questions asked. After the second month of Simparica, I noticed she would start flinching, especially when I got too close. It was affecting her depth perception. Cut to last weekend. She sleeps on my bed, and I awoke to her having a full-blown seizure. That night I slept with the lights on. Goma's eyes were bugging, legs were locked, and she was shaking uncontrollably. It was scary. I was able to take her to the ER. They gave her treatment to stop the seizures. She is currently on anti-seizure meds and has a follow-up next week. For now, we are doing a topical flea treatment.


Rated 1 out of 5 stars
By Pani on Dec 8, 2025

Very expensive and unprofessional in Ziploc bag

Taking the pills off of the original box and cut them half and put it in Ziploc bag for over $100 is very unprofessional and it’s way more expensive than full price

Taking the pills off of the original box and cut them half and put it in Ziploc bag for over $100 is very unprofessional and it’s way more expensive than full price for a full box which comes with six pills. It was never mentioned in there description they’re gonna take the pills out of the originalbox and cut them in half and shovel it in a Ziploc bag and send it to me! Very disappointed.


Rated 1 out of 5 stars
By Lori on Dec 15, 2025

Tested Positive for Anaplasmosis after being on product all year long.

Both my dogs tested positive for Anaplasmosis, a bacterial infection transmitted through ticks. I don’t understand how this happened since both dogs have been on

Both my dogs tested positive for Anaplasmosis, a bacterial infection transmitted through ticks. I don’t understand how this happened since both dogs have been on Simparica Trio since we were able to start giving them preventatives. We’ve had them since they were 8wks old and NEVER missed a dosage.


Rated 3 out of 5 stars
By Ivette on Jan 9, 2026

Bad reaction but good product

Be careful with this product if your dog has IBD. Mine had an awful reaction to it that caused bloody diarrhea, vomit, and shaking. The product was effective in

Be careful with this product if your dog has IBD. Mine had an awful reaction to it that caused bloody diarrhea, vomit, and shaking. The product was effective in the past, but we can't use it anymore.


Rated 5 out of 5 stars
By Rick on Jan 11, 2026

Seems to be working after the first dosage. However, they are chewable at all.

My dog wouldn’t chew the tablet. Way too hard. I had to put it in a plastic bag and try to demolish it with a large hammer. Something isn’t right about how hard

My dog wouldn’t chew the tablet. Way too hard. I had to put it in a plastic bag and try to demolish it with a large hammer. Something isn’t right about how hard it is and doesn’t break apart.


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

Preventative Measures

I am a very careful person. So I like to know this works? Probably does, but I like that it’s 3 in 1. It’s not fun trying to get my Mochi (Shiba Inu) to take th

I am a very careful person. So I like to know this works? Probably does, but I like that it’s 3 in 1. It’s not fun trying to get my Mochi (Shiba Inu) to take this.


Rated 5 out of 5 stars
By Mary on Dec 7, 2025

Amazing Customer Service!

I made a mistake when I ordered this product and the the customer service representative went above and beyond to make it right for me. I will never shop anywhere

I made a mistake when I ordered this product and the the customer service representative went above and beyond to make it right for me. I will never shop anywhere else from now on! Thank you very much for being such a responsive and helpful company. Four paws up!!!


Rated 1 out of 5 stars
By Janet on Dec 7, 2025

Poison , never give your dog

Maybe killing our dog, vet tomorrow first thing in morning. Should have read reviews not on Chewy before giving to her. Gracie is a Jack Russell. 8yrs. Super healthy

Maybe killing our dog, vet tomorrow first thing in morning. Should have read reviews not on Chewy before giving to her. Gracie is a Jack Russell. 8yrs. Super healthy til giving her this poison. Should not be on the market


Rated 5 out of 5 stars
By Ann on Dec 8, 2025

Home delivery

Simpparica trio does keep the ticks and fleas off my pup. We live out in a rual area where critters are readily available to hop a ride and grab a snack. It simple

Simpparica trio does keep the ticks and fleas off my pup. We live out in a rual area where critters are readily available to hop a ride and grab a snack. It simple to give. I break up the tablet and feed it with her regular kibble. No fuss.