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

Heartgard ® Plus Chewables (Brand) by Merial
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Download the Patient Information Sheet Download our Patient Information Sheet (PDF)
Size:
51-100 lb dogs
12 ct
PHY-6133
$84.96
$7.08 each    $7.08 each
How many 12 cts?
6 ct
PHY-6133
$44.94
$7.49 each    $7.08 each
How many 6 cts?
Single
PHY-6133
$8.49 each
   $7.08 each
How many Chewables?
Total Qty: 1 x 1 = 1
Price Per Chewable: $8.49
Subtotal: $8.49
Add to Cart
All items In-Stock and ready for delivery unless otherwise noted
26-50 lb dogs
12 ct
PHY-6132
$69.96
$5.83 each    $5.83 each
How many 12 cts?
6 ct
PHY-6132
$38.58
$6.43 each    $5.83 each
How many 6 cts?
Single
PHY-6132
$7.49 each
   $5.83 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
12 ct
PHY-6131
$55.92
$4.66 each    $4.66 each
How many 12 cts?
6 ct
PHY-6131
$29.94
$4.99 each    $4.66 each
How many 6 cts?
Single
PHY-6131
$5.99 each
   $4.66 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 Heartgard Plus video.

What is Heartgard Plus?
Heartgard Plus is a monthly oral pet med used as a combination heartworm preventive and intestinal wormer.

Who is it for?
Dogs and puppies over 6 weeks of age. Safe for pregnant/breeding females. Find Heartgard for Cats here.

What are the benefits of Heartgard?

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Protect your dog from potentially deadly heartworm disease
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Treat and control hookworms and roundworms (which can cause disease in both pets and people)
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Delicious beef-flavored chewable is easy to administer

How does Heartgard Plus work?
Heartgard Plus is used in the prevention of heartworm infection and the control and treatment of various other worm infections. It kills the immature form of the heartworm (Dirofilaria immitis), which is transmitted by a mosquito. It is also used for the treatment and control of hookworms (Ancylostoma caninum, A. brasiliense, and Uncinaria stenocephala) and roundworms (ascarids - Toxocara canis, Toxascaris leonina).

Heartgard Plus contains two active ingredients: ivermectin, which interferes with the parasite's nerve transmission, causing paralysis and death of the immature heartworms (larvae), and pyrantel pamoate, which also interferes with the parasite's nerve transmission, causing paralysis and death of intestinal worms.

Is there a generic equivalent available?
Yes, Tri-Heart Plus and the Iverhart Plus are branded generic alternatives to Heartgard Plus and should be interchangeable as long as the doctor does not indicate "dispense as written".

How is it given?
Heartgard Plus must be administered monthly, preferably on the same date each month. Drs. Foster and Smith recommends (and our guarantee requires) that Heartgard Plus 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.

Most dogs like the taste of Heartgard Plus and will accept the chewable like a treat. The chewable should be administered in a manner that encourages the dog to chew, rather than to swallow without chewing. Heartgard Plus 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 Plus will kill the immature heartworms the dog was exposed to in the preceding month. It will treat an intestinal infection with adult hookworms and roundworms.

What form(s) does it come in?
Chewables

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

More Info
Brand Name
Heartgard Plus Chewables

Pronunciation
Heart Guard Plus

Common Drug Name
Ivermectin plus pyrantel pamoate

What should I discuss with my veterinarian while considering Heartgard Plus?
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 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.

Some intestinal parasites, such as hookworms and roundworms can be spread to people. Talk to your veterinarian about other measures you can take to prevent your pet from being infected with intestinal worms, and protecting yourself.

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 Plus immediately and resume a 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 animals (female animals nursing their young).

Collies and herding breeds may have a reaction to Heartgard Plus.

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

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

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. Keep out of reach of children and pets.

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 Plus?
Although there are no known drug or food interactions with this medication, consult with your veterinarian before using Heartgard Plus 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 Plus different than Heartgard?
A. 
Heartgard Plus Chewables delivers all of the benefits of Heartgard and eliminates roundworms and hookworms, which can cause intestinal disease. Consider Heartgard Plus if you wish to protect your dog from roundworms and hookworms as well as heartworm disease. Heartgard Plus contains pyrantel in addition to ivermectin, which has been shown to be effective in the removal of certain intestinal worms.


Is there an economical, generic equivalent to Heartgard Plus?
A. 
Yes. Tri-Heart Plus is an FDA-approved alternative to Heartgard Plus that contains the exact same active ingredients, Ivermectin and Pyrantel, in the exact same amounts as Heartgard Plus, but costs less. In addition, our veterinarians recommend this product for dogs that might have a food sensitivity to beef since Tri-Heart Plus is made from pork liver.


What is heartworm disease and why is it bad for my dog?
A. 
Adult heartworms lay very tiny larvae called microfilariae, which circulate in the blood. They enter a mosquito when it sucks the blood of an infected animal. They mature in the mosquito and then 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.

The adult worms can obstruct the different chambers of the heart and 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 Plus?
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.



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


When should I start giving my dog Heartgard Plus during the year?
A. 
Drs. Foster & Smith recommends (and our guarantee requires) that Heartgard Plus be given year round. 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.


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.


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 Plus Chewables?
A. 
You can start giving Heartgard after your puppy reaches 6 weeks of age.


Can I break up a larger tablet into pieces to give my small dog or cat?
A. 
No. The active ingredient in Heartgard is not uniformly mixed throughout the chewable treat. The entire, appropriately sized chewable must be given.


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", break up the chewables into smaller pieces when you give them to your dog.


Description of prescription medication Heartgard® Plus and a success story of one dog who has used the medication to prevent heartworm infection.
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.
Almost every pet has had or will have a case of intestinal parasites at least once in his life. The two most common intestinal parasites in our pets are roundworms and hookworms.
Drs. Foster and Smith Licensed Pharmacy

Your pet's health is our #1 priority, which is why we make ordering prescription medications from Drs. Foster and Smith as easy as 1 - 2 - 3!

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.
Your pet's prescription is in the mail.
Your veterinarian is calling or faxing the prescription to our pharmacy.
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Mon. - Fri. 9:00 a.m. - 6:00 p.m. CST
Sat. 9:00 a.m. - 1 p.m. CST
Contact Us
Pharmacy Phone:
1-800-447-3021 (Toll Free)
Pharmacy Fax:
1-800-447-2404 (Toll Free)
Pharmacy Address:
P.O. Box 100
Rhinelander, WI 54501
Our pharmacy staff prides itself on providing you with the service and ease of ordering that you have come to trust exclusively from Drs. Foster and Smith.

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