TRI-HEART PLUS Chewable Tablet for Dogs, up to 25 lbs, (Blue Box), 12 Chewable Tablets (12-mos. supply) -

Tri-Heart Plus Chewable Tablet for Dogs, up to 25 lbs, (Blue Box)

By Tri-Heart Plus
Rated 4.6691 out of 5 stars
Prescription Item
Pet Weight

$43.98Chewy Price
This item requires prescription approval.

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This Item - Tri-Heart Plus Chewable Tablet for Dogs, up to 25 lbs, (Blue Box), 12 Chewable Tablets (12-mos. supply)
Rated 4.6691 out of 5 stars
$43.98Chewy Price
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About This Item


For use in animals only. Your furry friend must have a current heartworm test result on file with your veterinarian in order to be prescribed heartworm medication. Please visit your veterinarian to have this test performed annually to protect your four-legged friend. Tri-Heart Plus is an easy-to-feed chewable tablet prescribed to help keep your dog free of heartworm and other dangerous parasites. When given monthly, this simple and palatable tablet helps to protect your pet by killing the larvae before they reach your dog's heart. Best of all, the tasty tablets can be fed just like a treat! Your pet won't even know you're working to protect their heart.

Proudly sourced directly from the manufacturer or their approved distributor. Guaranteed genuine and backed by the manufacturer.

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Learn More About Tri-Heart Plus From Our Team of Experts

ReviewsWrite a Review

Rated 4.6691 out of 5 stars
269 Reviews
Would recommend to a friend

269 Customer Reviews

Rated 5 out of 5 stars
By JDC2 on Jan 28, 2023

Heart worm pills

My pups one male, one female have been on these for 10 plus years and have no issues taking them and have had no health issues

Rated 5 out of 5 stars
By Cbear on Dec 27, 2022

Tri-heart for dogs

I have given this to my cocker spaniel for the last year, and started my new puppy on it. Works great and easier on wallet. My dogs eat it as if it were a treat.

Rated 5 out of 5 stars
By Shelly on Sep 23, 2022

Great for fickle pup

My 10lb. Poodle would not eat other heart worm meds that were flavored. We tried everything, including mashing it up in his food and he ended up with hook worms. I switched to this product so I could put it inside of a peanut butter pill pocket treat. This has been working for us for a full year now! He tested all clear for any type or worms at his last visit, he was on this medication for 10 months at that point. Each month I put it in a pill pocket and make sure the pill is not showing in any way (the pill pockets are pliable.) I leave it sitting for at least 30 mins to make sure it smells like peanut butter and so far he eats up the entire thing every time.

Rated 5 out of 5 stars
By Sixpack on Sep 14, 2022

Quality Product

I had used this product for years. I bounced around with some other brands but realized this is the most bang for my buck and it works! We were trying out some prevention that had flea protection as well but I was still having to occasionally use topical treatments. Fleas are year round in the south!! We have grown our little furry family to a six pack and they all eat them with no resistance! At our house heart worm prevention time is treat time!! We live in Florida and mosquitoes are bad and we trust this product! It worked for years and I am happy to be back using it again.

Rated 5 out of 5 stars
By Patricia on Sep 29, 2022

Heartworm medicine

I have had my 2 yr old chihuahua On heart guard plus because her vet Did not carry tri guard plus(same medicine just a different name) My dog all of a sudden did not want to take heart guard even when I Rolled up in cheese. She took the tri guard plus without any problem And it only cost me 20.00 instead of the 51.00 for heart guard plus. I am very pleased with product and over all dealings with chewy customer service and the convenience of ordering products.

Rated 5 out of 5 stars
By George on Dec 9, 2022

Easy to give

This is the only heartworm pill that my dog will take without any problems. Price is great also!

Rated 5 out of 5 stars
By SenorSpanky on Nov 3, 2022

Coming Up Soon

My Mom doesn't start this new medicine until later this month, so, I really can't review yet except, we got the medicine really quick from Chewy.

Rated 5 out of 5 stars
By Breanne on Nov 4, 2022

Tri heart plus

This product served its purpose well. God rid of yhe worms he had and prevents them from happening again. He's happy and healthy thank you!!

Rated 5 out of 5 stars
By highplainspreacher on Dec 30, 2022

does the job well

easy to administer, dog take very willingly, keeps her healthy and well

Rated 5 out of 5 stars
By Bevie on Nov 2, 2022

Tri-Heart Plus

Ordered and received it in a couple days. My vet quit carrying this in her office so this was the easiest way to get them.