View our Heartgard Plus video.
What is Heartgard Plus?
Who is it for?
What are the benefits of Heartgard?
How does Heartgard Plus work?
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?
How is it given?
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?
What form(s) does it come in?
Please click on "More Information" for possible drug and food interactions with this medication.
Heartgard Plus Chewables
Common Drug Name
What should I discuss with my veterinarian while considering Heartgard Plus?
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?
What is the most important information I should know?
Who should not take it?
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?
How is it stored?
What should I do if I know of or suspect there has been an overdose?
What should I avoid when giving my pet Heartgard Plus?
Where is more information available?
|Q.||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.
|Q.||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.
|Q.||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.
|Q.||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:
|Q.||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.
|Q.||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.
|Q.||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.
|Q.||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.
|Q.||When should I start giving my puppy Heartgard Plus Chewables?|
|A.||You can start giving Heartgard after your puppy reaches 6 weeks of age.
|Q.||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.
|Q.||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.