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Heartgard Plus Chewables for Large Dog 51-100lbs (Brown)
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Heartgard Plus Chewables for Large Dog 51-100lbs (Brown)

$46.90
(465)
(465)
Select Pet's Weight:
  • Upto 25lbs
  • Upto 25lbs (Nuheart)
  • 26 to 50lbs
  • 26 to 50lbs (Nuheart)
  • 51 to 100lbs
  • 51 to 100lbs (Nuheart)
Select Pack:
  • 6 Doses
  • 12 Doses
$46.90
$44.55
Heartgard Plus Chewables for Large Dog 51-100lbs (Brown)
$46.90
6 Reasons to Choose Heartgard Plus?
  • Efficient heartworm preventive.
  • Highly palatable.
  • Prevents heartworm disease for an entire month.
  • Protects against hookworms and roundworms.
  • Easy to administer.
  • Suitable for dogs of all sizes.
  • Overview
Overview

Heartgard Plus Chewables Large Dogs 51 – 100 lbs (Brown)

Heartgard Plus Chewables for Large Dogs 51 to 100 lbs (Brown) are formulated to help prevent heartworm disease while treating and controlling certain hookworms and roundworms. Designed specifically for large dogs weighing 51 to 100 pounds, this brown pack monthly chew provides targeted dosing with 272 mcg of ivermectin and 227 mcg of pyrantel per chewable tablet. Suitable for large dogs 6 weeks of age and older, it offers reliable parasite protection in an easy-to-administer, real beef-flavored chew. Given once every month as directed, this weight-specific formula supports consistent, year-round heartworm prevention and intestinal worm control for large dogs.

How It Helps

Heartgard Plus contains two trusted active ingredients, ivermectin and pyrantel that work together to protect your dog. It helps prevent heartworm disease by eliminating the early stage of the parasite before it can develop into adult heartworms. It also treats and controls certain species of hookworms and roundworms that can affect your dog’s digestive health. Given monthly, it provides continuous protection when used as directed by your veterinarian.

Who It’s For

  • Large dogs 6 weeks of age and older, weighing between 51-100 lbs.
Your veterinarian can help determine the correct strength based on your dog’s current weight.

Why Pet Parents Choose It

  • Helps prevent heartworm disease for a full month
  • Treats and controls multiple species of hookworms and roundworms
  • Real beef-flavored chew most dogs accept easily
  • Simple once-a-month dosing
  • Available in weight-specific strengths for accurate dosing

How To Use

  • Have your dog tested for heartworm infection before starting Heartgard Plus.
  • Give one chewable tablet by mouth once every month.
  • Administer on the same date each month for consistency.
  • If a dose is missed and more than 30 days have passed, give a dose immediately and resume the monthly schedule.
  • Heartworm prevention should be continued year-round.
  • The chew may be broken into pieces if needed to help with swallowing.
  • The chew may be added intact to a small amount of dog food to encourage chewing, but care should be taken to ensure that the dog consumes the complete dose at one time.
  • Remove tablets from the package only when ready to use and store away from direct sunlight.

Dosage:

Dog weight (lbs.) Chews per month Ivermectin (mcg) Pyrantel (mcg)
0 – 25 One 68 57
26 – 50 One 136 114
51 – 100 One 272 227
Over 100 Administer the appropriate combination of chewables

Safety & Care Tips

  • Dogs should be tested for existing heartworm infection before starting prevention.
  • Use year-round for continuous protection.
  • If more than two months of doses are missed, consult your veterinarian before restarting.
  • Use as directed by your veterinarian.
  • Avoid contact with eyes while handling the product.
  • Keep out of reach of children and other pets.
  • If you have questions about your dog’s health status, speak with your veterinarian before use.

What’s Inside

Active Ingredients:

  • Ivermectin
  • Pyrantel

Available Pack Sizes

  • 6-dose pack
  • Available in weight-based strengths for small, medium, and large dogs:
Product Name Pet Size Pet Weight Color Code
Heartgard Plus Chewables Small Dogs Up to 25 lbs Blue
Heartgard Plus Chewables Medium Dogs 26–50 lbs Green
Heartgard Plus Chewables Large Dogs 51–100 lbs Brown

Frequently Asked Questions:

1. What does Heartgard Plus protect my dog against?

Heartgard Plus helps prevent heartworm disease and treats and controls certain hookworms and roundworms. It supports monthly parasite protection when used as directed by your veterinarian.

2. How often should I give Heartgard Plus?

It should be given once every 30 days. Giving it on the same date each month helps maintain consistent protection.

3. Does my dog need a heartworm test before starting?

Yes. Dogs should be tested for existing heartworm infection before beginning a prevention program. Your veterinarian can perform this simple test.

4. Can puppies take Heartgard Plus?

Yes. It is suitable for puppies and dogs 6 weeks of age and older, provided they meet the appropriate weight range.

5. What if I miss a dose?

If more than 30 days have passed since the last dose, give a chew as soon as possible and resume your regular monthly schedule. If multiple doses are missed, contact your veterinarian for guidance.

6. Can Heartgard Plus be given with food?

Yes. It can be given with or without food. Make sure your dog fully chews the tablet.

If you have additional questions, your veterinarian is the best source of guidance for your dog’s specific needs.

Customer Reviews

Reviews
Rating Summary
465 Review(s)
5 star
61.08%
4 star
10.75%
3 star
27.53%
2 star
0.43%
1 star
0.22%
Overall Rating

4.2 Star

Average Customer Ratings
Quality of Product
3.4
Value of Product
3.8
Pet Satisfaction
3.7
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Smart Savings
submitted by Fiora on Jun 03, 2026

Budget-friendly without compromising care.

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Quality of Product
2.0
Value of Product
2.0
Pet Satisfaction
2.0
Hassle-Free Prevention
submitted by Rhett on Jun 03, 2026

Easy to stay consistent with dosing.

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Quality of Product
2.0
Value of Product
2.0
Pet Satisfaction
2.0
Stress-Free Routine
submitted by Amelia on May 26, 2026

Monthly dosing couldn't be simpler.

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Quality of Product
2.0
Value of Product
2.0
Pet Satisfaction
2.0
Budget Saver
submitted by Grace on May 25, 2026

Great value without sacrificing quality.

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Quality of Product
2.0
Value of Product
2.0
Pet Satisfaction
2.0
Trusted Choice
submitted by Jason on May 23, 2026

Simple dose. My dog loves it.

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Quality of Product
2.0
Value of Product
2.0
Pet Satisfaction
2.0