piggy bank with coin animation

SAME MEDICATION1

FOR DOGS.

EASIER-TO-SWALLOW PRICE

FOR OWNERS.

A TREAT YOU’LL BOTH ENJOY

Watch how Tri-Heart® Plus protects your pet and saves you money

tri-heart product with 3 variation
Tri-Heart Pill = HeartGard Plus Pill

THE SAME PROVEN ACTIVE INGREDIENTS

AS THE LEADING HEARTWORM PREVENTATIVE BRAND1

30% LOWER PRICE2

Proven Heartworm Protection That You and Your Dog Will Love

Tri-Heart® Plus provides proven heartworm disease prevention for your pet with year-round savings for you.

LEARN MORE
a man and his dog

HEARTWORM PREVENTION FOR EVERY SIZE DOG

A simple and palatable monthly, chewable tablet protects by killing the larvae before they reach your dog’s heart.

heartworm prevention-small dogs

Small Dogs

1-25 Lbs

heartworm prevention-medium dogs

Medium Dogs

26-50 Lbs

heartworm prevention-large dogs

Large Dogs

51-100 Lbs

Dog Illustration with fly
1 Bite from an Infected Mosquito is All That it Takes

STOP THE INFECTION CYCLE

A mosquito carrying heartworm larva can infect your dog with worms that develop and reproduce inside him. Treatment for heartworm disease can be long and costly, and is no guarantee a dog will survive.

Once a dog is infected he is also at risk for spreading heartworms to other dogs by infecting new mosquitos. Tri-Heart® Plus keeps your dog safe and helps prevent the spread of infection.

JUST AS EFFECTIVE, JUST AS PALATABLE

94% of dogs enjoy the chewable tablets.3

A taste test of Tri-Heart® Plus Chewable Tablets vs. Heartgard® Plus Chewables showed that dogs have no preference.3

brown Dog
hands holding tablet
From the company you trust - MERCK Animal Health
100 Percent Satisfaction Guarantee

If for any reason you are not satisfied, speak to your veterinarian or call our toll-free guarantee center at 1-800-224-5318 for replacement or refund. In the unlikely case of infection arising while on Tri-Heart® Plus our new comprehensive guarantee sheet covers treatment drug costs and veterinary service fees.

Click Here for complete details.

START SAVING WITH
TRI-HEART® PLUS TODAY

FIND A VET

Important Safety Information:

All dogs should be tested for heartworm infection before starting a preventive program. In a small percentage of ivermectin/pyrantel treated dogs, digestive and neurological side effects may occur.

References:

1. Tri-Heart® Plus [prescribing information]. Madison, NJ: Merck Animal Health; 2014; Heartgard® Plus [prescribing information]. Duluth, GA: Boehringer Ingelheim; 2019.

2. Average discounted price of Tri-Heart® Plus compared to Heartgard® Plus. March 2025.

3. September 2000, ANADA 200-338, Palatability of Chewable Tablets. Heska Corporation Submission

HEARTGARD is a registered trademark of Boehringer Ingelheim.