Heartworm prevention for dogs Video: Heart Defense for Dogs Your pet is the start of the box Heart Defense for Dogs close up Heartworm prevention for dogs Video: Heart Defense for Dogs Your pet is the start of the box Heart Defense for Dogs close up

Heartworm prevention for dogs

Heart Defense™
for Dogs

Vet-quality and FDA-approved ingredients in a convenient, easy-to-remember monthly dose.

$12* As low as $8 per month
with multi-product pricing »

Get started

  * $20 per month for dogs over 100 lbs

Free Delivery, Vet on Staff, No Contracts
RX Required

Heartworm prevention for dogs

Heart Defense™ for Dogs

$12*  As low as $8 per month
 with multi-product pricing »

Vet-quality and FDA-approved ingredients in a convenient, easy-to-remember monthly dose.

*$20 per month for dogs over 100 lbs



The heart of the matter

Why Heart Defense



Heartworm disease poses serious and sometimes fatal health conditions for your pup. All it takes is one mosquito bite — and vet visits and medical bills can be expensive.

Keep your best friend’s heart healthy and tail wagging with effective and affordable prevention.

 

FDA-Approved

Big-name ingredients,
convenient monthly dose

Same active ingredients as Heartgard Plus

Heart Defense has the same quality ingredients and flavor as Heartgard® Plus — but in a convenient, easy-to-remember dose delivered to your door.

HEARTGARD is a registered trademark of Boehringer Ingelheim Animal Health USA Inc.


AFFORDABLE FOR BIG FAMILIES

Multi-pet pricing

Your entire pack needs heartworm prevention. When you protect more pets, you save BIG.

1 XL dog @ $12 @ $20 $12 $20
2 XL dogs @ $11 @ $19 $24 $40 $22 $38
3 XL dogs @ $10 @ $18 $36 $60 $30 $54
4 XL dogs @ $9 @ $17 $48 $80 $36 $68
@ $8 @ $16 $ $ $ $
Pricing for dogs over 100 lbs »
Get started

Free shipping • Cancel anytime


the perfect fit for every dog

Personalized heartworm
prevention for dogs

Heartworm prevention in a single monthly dose, sized to your pet’s unique weight.

 

How it works

Effective, vet-quality heartworm prevention

  1. Customize your box

    Customize your box

    Create unique profiles for each pet. Be sure to include your pet’s name, weight, and a photo, so you always give the right dose.

  2. Find your
    vet

    Prescription for Heartworm Prevention

    When you add Heart Defense to your box, you’ll need a prescription. Use our simple search tool to identify your pet’s vet and request their Rx.

  3. Get your prescription

    Box delivered to you

    As soon as your prescription is approved, we’ll send your pet's personalized products straight to your door!

Treat & Repeat

Give your pets their custom dose as soon as your box arrives. With our tasty chewable tablet, their monthly treatment feels like a treat.




Complete defense against heartworm disease



Even with routine testing, it can take up to nine months to detect heartworm. Heart Defense prevents the development of heartworms before they become a problem.

Simple and effective

Heart Defense is FDA-approved and made in the USA. This easy-to-remember chewable tablet makes prevention the heart of the matter.

Vet-quality, FDA-approved

Don’t get locked into multi-month packages — Heart Defense comes in a monthly dose with your pet’s name and photo on the front.

Convenient monthly dose

We don’t stop at heartworm protection. Give your pets the care they deserve — from topical flea & tick protection to dental care.

Comprehensive pet care

Tracy Isenberg, LVT

Heart Defense offers affordable and effective protection against heartworm disease in dogs without all the hassle. Every dose is tailored to your unique pet. Our product is comparable to Heartgard® Plus.



Frequently Asked Questions

PetFriendly box

What’s included included with my
PetFriendly Subscription?

Get Started