Tri-Heart Plus Chewable Tablet for Dogs, 51-100 lbs, (Brown Box), 6 Chewable Tablets (6-mos. supply)

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$49.99 Autoship Price
  • Never miss a dose with easy refills
  • Skip, change, or cancel anytime
$49.99 Chewy Price
($8.34 /ea)

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

  • Prevents heartworm disease, treats, and controls roundworms and hookworms
  • Kills heartworm larvae before they reach your dog�s heart
  • Enjoy year-round protection for your dog, with monthly treatments
  • Easy-to-give, beef-flavored, chewable tablet that your dog will enjoy.
  • Safe for dogs with beef allergies

Ingredients

Instructions

FAQ

Learn More About Tri-Heart Plus From Our Team of Experts
4.8
Rated 4.8 out of 5 stars
3427 Ratings

Customers Mention

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

Ease of Use

94% Positive

Effectiveness

93% Positive

Ingredients

93% Positive

Long-Term Benefits

94% Positive

1158 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 Fred on Jan 12, 2026

Mix up on prescription

Ordered two with mail-in and one requested Chewy contact veterinarian by fax or E-mail. Chewy tried all 3 by e-mail but veterinary only does one or the other. Shipment

Ordered two with mail-in and one requested Chewy contact veterinarian by fax or E-mail. Chewy tried all 3 by e-mail but veterinary only does one or the other. Shipment was delayed. Chewy has alway been excellent to deal with fast deliveries and easy ordering on line.


Rated 5 out of 5 stars
By Elizabeth on Jan 27, 2026

Tri-Heart Plus

I have been giving these tablets monthly for years to Stella, a 72lb boxer. They have been keeping her healthy as she is now 13 years old and still kicking it u

I have been giving these tablets monthly for years to Stella, a 72lb boxer. They have been keeping her healthy as she is now 13 years old and still kicking it up!


Rated 5 out of 5 stars
By Diana on Jan 24, 2026

The price is right.

It amazes me that you can buy Ivermectin for a 1200lb horse for about $8 dollars. But what the drug companies charge for a dog is outrages! Thanks Chewy for being

It amazes me that you can buy Ivermectin for a 1200lb horse for about $8 dollars. But what the drug companies charge for a dog is outrages! Thanks Chewy for being reasonably priced.


Rated 5 out of 5 stars
By April on Oct 21, 2025

The Price

Tri-Heart Plus is such an amazing product! It is the same as Heartgard. It has the same ingredients, but the price is a lot cheaper with a lot more coverage and

Tri-Heart Plus is such an amazing product! It is the same as Heartgard. It has the same ingredients, but the price is a lot cheaper with a lot more coverage and benefits. The only difference between Tri-Heart and Heartgard is that Tri-Heart is a round chewable tablet and Heartgard is a softer chew. Tri-Heart Plus has not failed my fur baby or I! I would highly recommend this product this product to anyone who wants to protect their fur babies, but is also budget friendly!


Rated 5 out of 5 stars
By Crimson on Dec 11, 2025

No reason to buy the more expensive ones

These have the same ingredients as more expensive brands andwork as well as they do. All three of my dogs eat them like they are treats. I've been using them for

These have the same ingredients as more expensive brands andwork as well as they do. All three of my dogs eat them like they are treats. I've been using them for many years


Rated 5 out of 5 stars
By Amanda on Jan 26, 2026

That it helps Matilda

It helps Matilda with her heart worms and I'm very pleased with it because it's seems to be helping her

It helps Matilda with her heart worms and I'm very pleased with it because it's seems to be helping her


Rated 4 out of 5 stars
By Theresa on Jan 6, 2026

Prompt delivery

The tablets are fine, but the packaging is way over the top. Maybe consider reducing the size of the box for future shipments.

The tablets are fine, but the packaging is way over the top. Maybe consider reducing the size of the box for future shipments.


Rated 5 out of 5 stars
By Ciara on Nov 20, 2025

Heartworm NEGATIVE!

When we adopted our dog, she was heartworm positive. Because of her energy level, we opted to not risk her health with injection treatment. After a year on this

When we adopted our dog, she was heartworm positive. Because of her energy level, we opted to not risk her health with injection treatment. After a year on this heartworm preventative, our girl is heartworm-free!


Rated 5 out of 5 stars
By Larry on Jan 18, 2026

Got what we needed in a timely manner.

Although, I wish the driver wouldn't leave the package in plain view from the street when options are there.

Although, I wish the driver wouldn't leave the package in plain view from the street when options are there.


Rated 5 out of 5 stars
By Patti on Dec 10, 2025

No need to hide this one

Both of my dogs will eat this without me having to hide it. They think it’s a treat. Been using this brand for a couple of years now and all is well for them.

Both of my dogs will eat this without me having to hide it. They think it’s a treat. Been using this brand for a couple of years now and all is well for them.