Simparica Trio Chewable Tablet for Dogs, 5.6-11.0 lbs, (Purple Box), 1 Chewable Tablet (1-mo. supply)

Have a Chewy account?
Sign in to quickly add pet health details.
$37.50 Autoship Price
(-5%)
  • Keep saving 5% on every order
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$39.47 Chewy Price
($39.47 /ea)
Promo, Save 20% on first Rx order with code RX20
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME

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

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
4618 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

87% Positive

Long-Term Benefits

89% Positive

1337 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 Christine on Dec 27, 2025

The caring of your Pharmacist.

I lost my Bella just before receiving the medication. At the very least, I was heartbroken. I called to cancel future shipments and without my asking, canceled the

I lost my Bella just before receiving the medication. At the very least, I was heartbroken. I called to cancel future shipments and without my asking, canceled the future months. I don't know if I get another dog because of my age but if I can, it will be an older dog to care for. You may be sure I would come to Chewy for products. Thank you.


Rated 5 out of 5 stars
By Laura on Jan 9, 2026

Works great and tolerated well

I love how well Simparica works on ticks. We had a real problem last summer due to a mild winter and not one tick was able to dig into either of my dogs. I would

I love how well Simparica works on ticks. We had a real problem last summer due to a mild winter and not one tick was able to dig into either of my dogs. I would still find them on my dogs but they were usually already dead! Haven't noticed any fleas either so working great!


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

Very expensive for three of them

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 Karen on Dec 26, 2025

Delivery

Delivery was absolutely HORRIBLE! OnTrac is a horrible company who you contract with for deliveries! They left the package on a bush at the end of my driveway!

Delivery was absolutely HORRIBLE! OnTrac is a horrible company who you contract with for deliveries! They left the package on a bush at the end of my driveway! Totally unacceptable! I cannot order from you if you are using OnTrac for delivery!


Rated 5 out of 5 stars
By Marilyn on Dec 13, 2025

Perfect Monthly Chewable Flea, Tick and Heartworm Tablet

My toy poodle's vet prescribed this all-in-one tablet last year. At 8.2 lbs, she will be 2 years old next month. I cut the tablet in quarters and hide it in small

My toy poodle's vet prescribed this all-in-one tablet last year. At 8.2 lbs, she will be 2 years old next month. I cut the tablet in quarters and hide it in small balls of her wet dog food on the first day each month. We walk in our neighborhood daily and I am comforted she is always protected.


Rated 1 out of 5 stars
By Farrah on Dec 29, 2025

Terrible delivery service

My item was supposed to be delivered on Friday and was never received. I had to go through representative to representative it seems like you all using a new delivery

My item was supposed to be delivered on Friday and was never received. I had to go through representative to representative it seems like you all using a new delivery service and it is not good at all.


Rated 5 out of 5 stars
By Ann on Dec 25, 2025

Prevents fleas, ticks and heartworms

So easy to dose my dog once a month and keep him safe. I give him the tablet with a little peanut butter although they are already flavored chews. He’s picky, but

So easy to dose my dog once a month and keep him safe. I give him the tablet with a little peanut butter although they are already flavored chews. He’s picky, but these are easy to give him.


Rated 5 out of 5 stars
By Nicole on Dec 24, 2025

Helpful representatives

My vet called in the incorrect dosage, both of my Chewy representatives were quick to get the matter resolved. Chewy is paws-down one of my favorite companies to

My vet called in the incorrect dosage, both of my Chewy representatives were quick to get the matter resolved. Chewy is paws-down one of my favorite companies to buy from!!


Rated 5 out of 5 stars
By Chris on Jan 14, 2026

The price was great

Happy to get a good price, but would you be able to contact my vet to continue receiving prescription prescriptions from you?

Happy to get a good price, but would you be able to contact my vet to continue receiving prescription prescriptions from you?


Rated 2 out of 5 stars
By Craig on Oct 22, 2025

what is missing???

Both Louie and Sophie look forward to their medication, on auto ship status. This time Louie got his but Sophie didn't get hers. I logged in to check on things and

Both Louie and Sophie look forward to their medication, on auto ship status. This time Louie got his but Sophie didn't get hers. I logged in to check on things and didn't find anything wrong - I had to reorder Sophie's... When it arrived it had Louie's name on the box. So We are confused and wondering what will happen in three months when the order comes around