Heartgard Chewables for Dogs
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Heartgard ® Chewables for Dogs (Brand) by Merial

Heartgard <sup>®</sup> Chewables for Dogs (Brand) <em>by Merial</em>
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Size:
51-100 lb dogs
6 ct
PHY-6136
$44.94
$7.49 each
How many 6 cts?
Single
PHY-6136
$8.99 each
How many Chewables?
Total Qty: 1 x 1 = 1
Price Per Chewable: $8.99
Subtotal: $8.99
Add to Cart
All items In-Stock and ready for delivery unless otherwise noted
26-50 lb dogs
6 ct
PHY-6135
$37.74
$6.29 each
How many 6 cts?
Single
PHY-6135
$7.49 each
How many Chewables?
Total Qty: 1 x 1 = 1
Price Per Chewable: $7.49
Subtotal: $7.49
Add to Cart
All items In-Stock and ready for delivery unless otherwise noted
1-25 lb dogs
6 ct
PHY-6134
$29.94
$4.99 each
How many 6 cts?
Single
PHY-6134
$5.99 each
How many Chewables?
Total Qty: 1 x 1 = 1
Price Per Chewable: $5.99
Subtotal: $5.99
Add to Cart
All items In-Stock and ready for delivery unless otherwise noted
Overview

View our How to manage Heartworms video.

What is Heartgard?
Heartgard is a monthly oral pet med used in dogs and puppies as a heartworm preventive.

Who is it for?
Dogs and puppies over 6 weeks. Safe for pregnant/breeding females.

What are the benefits?

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Prescription pet med prevents heartworm infection in dogs and puppies
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Heartgard dog medication comes in convenient chewables
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Easy once-a-month administration

How does Heartgard work?
Heartgard is used in the prevention of heartworm infections. It kills the immature form of the heartworm (Dirofilaria immitis). Heartgard contains ivermectin, which interferes with the parasite's nerve transmission, causing paralysis and death of the immature heartworms (larvae).

Is there a generic equivalent available?
We do not carry a generic form of Heartgard tablets/chewables.

How is it given?
Heartgard must be administered monthly, preferably on the same date each month. Drs. Foster and Smith recommends (and our guarantee requires) that Heartgard be given year round, although some veterinarians may recommend giving it only during the mosquito season. If given seasonally, the first dose must be given within 30 days of the dog's first exposure to mosquitoes. The last dose must be given within 30 days after the dog's last exposure to mosquitoes.

Remove only one Heartgard Chewable at a time from the foil-backed blister card. Put the remaining Heartgard Chewables back into the box to protect from light. Most dogs like the taste of Heartgard Chewables and will accept the chewable tablet as a treat. The chewable should be administered in a manner that encourages the dog to chew, rather than to swallow without chewing. Heartgard Chewables may be broken into pieces and fed to dogs that normally swallow treats whole. Care should be taken that the dog consumes the complete dose, and treated animals should be observed for a few minutes after administration to ensure that part of the dose is not lost or rejected. If not entirely consumed, give another full recommended dose as soon as possible.

What results can I expect?
Heartgard will kill the immature heartworms the dog was exposed to in the preceding month.

What form(s) does it come in?
Chewables, Tablets

Please click on "More Information" for possible drug and food interactions with this medication.

More Info

Brand Name
Heartgard for Dogs

Pronunciation
Heart Guard

Common Drug Name
Ivermectin

What should I discuss with my veterinarian while considering Heartgard?
Talk to your veterinarian about the heartworm testing that is recommended before starting your dog on a heartworm prevention program.

Collies or other herding breeds may have a reaction to ivermectin if given over the recommended heartworm prevention dose. If your dog is one of these breeds, and your veterinarian has prescribed Heartgard, observe your pet for at least 8 hours after giving the medication for weakness, staggering, dilated pupils, trembling, drooling, or pressing the head against a wall. Contact your veterinarian immediately if you see these signs.

Notify your veterinarian of any other medications or supplements your dog is taking, and also if your dog has had any reactions to previous medications.

What should I do if I miss a dose?
If a dose is missed and over 30 days have gone by since the last dose, give Heartgard immediately and resume the monthly dosing schedule. Tell your veterinarian that a dose was missed.

What is the most important information I should know?
If the interval between doses is longer than one month, the efficacy of the drug is reduced.

Who should not take it?
Do not use in puppies less than 6 weeks of age. Considered to be safe to use in pregnant and lactating dogs (female animals nursing their young).

Collies and herding breeds may have a reaction to Heartgard.

This medication should only be given to the pet for which it was prescribed.

What side effects may be seen when taking Heartgard?
Side effects of Heartgard are very rare, but may included vomiting and diarrhea. Even more uncommon ar incoordination, convulsions, or drooling. Contact your veterinarian immediately if you observe these signs.

How is it stored?
Store between 68°F-77°F (20°C-25°C). Short time periods between 59°F-86°F (15°C-30°C) are permitted. Protect product from light. The chewable form of the drug is appealing to pets and children. Store in a secure area to prevent an accidental overdose.

What should I do if I know of or suspect there has been an overdose?
If you know or suspect your pet has had an overdose, or if you observe diarrhea, vomiting, incoordination, convulsions or drooling, contact your veterinarian immediately.

What should I avoid when giving my pet Heartgard?
Although there are no known drug or food interactions with this medication, consult with your veterinarian before using Heartgard with any other medications, including vitamins and supplements, since interactions may occur.

Where is more information available?
Ask your veterinarian, consult with one of our pharmacists at 1-800-447-3021, or see the Patient Information Sheet on this medication. For technical assistance or to report suspected adverse reactions, call the manufacturer, Merial, at 1-888-637-4251.

Articles
Frequently Asked Questions
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How is Heartgard different than Heartgard Plus?
A. 
Heartgard is designed for the elimination of heartworms. Heartgard Plus also contains an ingredient called Pyrantel which eliminates large roundworms and hookworms in addition to heartworms.


What is heartworm disease and why is it bad for my dog?
A. 
Adult heartworms lay very tiny larvae called microfilariae, which enter the animal's skin when an infected mosquito bites the animal. When the larvae reach about 3 inches, they migrate to the animal's heart where they grow into adults, sometimes reaching a length of 14 inches.

Severely infected dogs can have up to several hundred heartworms in their hearts and vessels. The adult worms can obstruct the different chambers of the heart as well as the various large blood vessels leading to and from the heart and lungs. In severe infections, other organs, such as the liver, can also be damaged.



Does my dog need a test before I start giving him Heartgard?
A. 
The American Heartworm Society advises that all adult dogs being started on a heartworm preventative for the first time be tested. After that, periodic, but not necessarily annual re-testing should be performed. The frequency of testing should take into account variables such as:
  • Prevalence of heartworm disease in the area
  • Missed or late doses of heartworm preventative
  • The dog's lifestyle
In areas where the mosquito season in not year-round, puppies born after the mosquito season do not need to be tested. For instance, in Northern Wisconsin, puppies born in January do not need to be tested. Consult with your veterinarian to determine the appropriate testing schedule for your dog.



Can I give my dog a chewable if he does not chew treats?
A. 
Chewables should be chewed and not swallowed, so if your dog is a “gulper”, either choose the tablets or break up the chewables into smaller pieces when you give them to your dog If the dose or any part of it is rejected, re-dosing is recommended. Consult your veterinarian if your dog is a Collie or other herding breed.


How often should I give this medication to my dog?
A. 
Heartgard tablets and Heartgard chewables are meant to be given every 30 days. When you start your dog on Heartgard, make sure to give it to him on the same day every month. Use the convenient heart stickers included in the package to put on to your calendar to remind you of the monthly date.


When should I start giving my dog Heartgard during the year?
A. 
Remember that Heartgard kills larvae your dog was exposed to in the preceding 30 days, so if you give your dog a preventative seasonally, give it to him a month after the first mosquito appears.


What if I miss a dose?
A. 
If the interval between doses exceeds 30 days, ivermectin's efficacy can be reduced. Therefore, if you miss a dose, give the Heartgard as soon as you remember that you missed it. We also recommend that testing the dog for heartworm infection 6-1/2 months after the missed dose.


I have heard that Collies and other herding breeds have trouble with ivermectin. What can you tell me about this?
A. 
Collies or other herding breeds may have a reaction to ivermectin if given over the recommended heartworm prevention dose. The manufacturer states the product should be safe in these breeds if used as recommended however, if your dog is one of these breeds, and your veterinarian has prescribed Heartgard Plus, observe your pet for at least 8 hours after giving the medication for weakness, staggering, dilated pupils, trembling, drooling, or pressing the head against a wall. Contact your veterinarian immediately if you see these signs.


When should I start giving my puppy Heartgard?
A. 
You can start giving Heartgard after your puppy reaches 6 weeks of age.


What if I want to protect my dog against intestinal worms as well as heartworm?
A. 
Consider Heartgard Plus if you wish to protect your dog from large roundworms and hookworms. Heartgard Plus contains pyrantel in addition to ivermectin, which has been shown to be effective in the removal of certain intestinal worms.


Although heartworm is treatable, it may result in serious complications. No matter what it costs in dollars, the cost is even greater to the long-term health of your pet.
Frequently Asked Questions about Heartworm
Heartworm, or Dirofilaria immitus disease is seen in all 50 states. Follow this case from our clinic to see how one dog owner dealt with this devastating disease.
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At the completion of your order, you will be prompted to supply us with your veterinarian's information including how we will receive your pet's prescription from the following options:

Let us do the legwork! We will contact your veterinarian for prescription authorization.
You already have an existing prescription on file with Drs. Foster and Smith.
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Sat. 9:00 a.m. - 1 p.m. CST
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Pharmacy Phone:
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Pharmacy Fax:
1-800-447-2404 (Toll Free)
Pharmacy Address:
P.O. Box 100
Rhinelander, WI 54501
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