Tri-Heart Plus Chewable Tablet for Dogs, up to 25 lbs, (Blue Box), 6 Chewable Tablets (6-mos. supply)
Prescription Item
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Your furry friend must have a current heartworm test result on file with your veterinarian in order to be prescribed heartworm medication. Please visit your veterinarian to have this test performed annually to protect your four-legged friend. Tri-Heart Plus is an easy-to-feed chewable tablet prescribed to help keep your dog free of heartworm and other dangerous parasites. When given monthly, this simple and palatable tablet helps to protect your pet by killing the larvae before they reach your dog's heart. Best of all, the tasty tablets can be fed just like a treat! Your pet won't even know you're working to protect their heart.
UsesTri-Heart Plus is a monthly chew indicated to kill heartworm larvae and to control/treat adult hookworms and roundworms.
Possible Side EffectsTri-Heart Plus is safe and has caused no side-effects in most dogs, but upset stomachs have been reported. Incoordination, convulsions, or drooling have also been reported rarely. Always contact your veterinarian if your pet appears sick or behaves strangely after taking Tri-Heart Plus.
Drug & Food InteractionsTalk to your veterinarian about any other drugs your dog is taking before starting Tri-Heart Plus.
Precautions
All dogs should be tested for existing heartworm infection before starting treatment with Tri-Heart Plus, which is not effective against adult D. immitis. Infected dogs must be treated to remove adult heartworms and microfilariae before initiating a program. Tri-Heart Plus is not indicated for dogs younger than 6 weeks old. Herding breeds (such as Collies) can be sensitive to the active ingredient, so talk to your veterinarian if your dog may be affected. If you miss a dose, your dog needs a blood test to resume your normal doses safely. Notify your veterinarian if you've skipped a dose or have any concerns. Keep this and all drugs out of the reach of children.
This item is excluded from the first-time Autoship promotion.
Dosage Chart
Color on Box | Weight Range | Strength | Dosage | Product Page |
---|---|---|---|---|
Blue | Up to 25 lbs | 68 mcg Ivermectin & 57 mg Pyrantel | Administer orally once a month | ✓-Click Here |
Green | 26-50 lbs | 136 mcg Ivermectin & 114 mg Pyrantel | Administer orally once a month | ✓-Click Here |
Brown | 51-100 lbs | 272 mcg Ivermectin & 227 mg Pyrantel | Administer orally once a month | ✓-Click Here |
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Item Number146097
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Common Brand Name(s)Tri-Heart Plus, Heartgard Plus
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For Use WithDogs
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Generic NameIvermectin, Pyrantel Pamoate
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Administration FormOral
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BrandMerck
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LifestagePuppy, Adult, Senior
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Breed SizeExtra Small & Toy Breeds, Small Breeds
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Product FormChewable Tablet
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Strength68 mcg Ivermectin and 57 mg Pyrantel
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Health ConditionHeartworms, Hookworms, Roundworms
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Drug TypeParasiticide
Active Ingredients: 68 mcg Ivermectin and 57 mg Pyrantel.
Tri-Heart Plus can be fed every 30 days or based on your veterinarian's recommendation. They should be chewed, or you can mix them with a small amount of your dog's usual food.
Storage InstructionsStore at controlled room temperatures of 59° - 86°F. Protect product from light.
Is Tri-Heart Plus safe for my dog?
Tri-Heart Plus flavored chewable tablets are an FDA-licensed product, indicating they are safe and effective when used as recommended on the label. All dogs should be tested for existing heartworm infection before starting treatment with Tri-Heart Plus.
My dog is taking some other medications for another condition. Is it still safe to give her Tri-Heart Plus tablets?
In clinical trials, many commonly used flea collars, dips, shampoos, anthelmintics (deworming medications), antibiotics, vaccines and steroid preparations have been administered with ivermectin/pyrantel in a heartworm disease prevention program. For questions about specific medications, please consult your veterinarian.
Is it okay to give my pregnant dog Tri-Heart Plus tablets? What about after she has given birth and is breastfeeding the puppies?
Ivermectin/pyrantel, the active ingredients in Tri-Heart Plus, have a wide margin of safety at the recommended dose level in dogs, including pregnant females, breeding males and females, and puppies 6 weeks or older, according to the package insert.
Can Tri-Heart Plus tablets be given to a dog that has heartworms or that is heartworm-positive?
No. Tri-Heart Plus is labeled for use in dogs to prevent heartworm disease and not for the treatment of heartworm infections. The package insert contains this precautionary statement: “Infected dogs must be treated to remove adult heartworms and microfilariae before initiating a program with Tri-Heart Plus flavored chewable tablets.”
Can Tri-Heart Plus be used as a heartworm preventive in cats?
No. Tri-Heart Plus is not approved for use in cats.
Our dog's Tri-Heart Plus flavored chewable tablets expired last month. Is it still okay to give her Tri-Heart Plus tablets after their expiration date?
Medications, including Tri-Heart Plus, should never be administered after the expiration date. Studies have shown that Tri-Heart Plus will maintain its desired effectiveness when administered prior to the expiration date, when stored as recommended on the label.
My dog weighs less than 10 lbs. Should I give him the whole tablet even though it says for dogs up to 25 lbs?
Yes. The entire tablet should be administered as a single dose once each month. The smallest-sized Tri-Heart Plus tablet, in the blue-colored packaging, is labeled for dogs weighing 25 lbs or less. These tablets are scored to make it easier to break the tablet apart and have the small dog take the complete tablet but in smaller pieces at a time. Regardless of whether the tablet is broken apart or given the whole, the entire tablet should be given as a single dose.
Is it okay to give my pregnant dog Tri-Heart Plus tablets? What about after she has given birth and is breastfeeding the puppies?
Ivermectin/Pyrantel, the active ingredients in Tri-Heart Plus, have a wide margin of safety at the recommended dose level in dogs, including pregnant females, breeding males and females, and puppies 6 weeks old or more according to the package insert.
I accidentally gave my dog his Tri-Heart Plus tablet after my husband had already given one to him. Will he be okay?
Contact your veterinarian immediately if accidental overdose occurs. To reduce the risk of accidental overdose in situations where more than one person may administer Tri-Heart Plus, we suggest ticking off the date on a specially marked calendar or making some other note to indicate that the dose has been given. Make a habit of checking with the other pet caregivers in your household before giving any medications to your pet.
My dog is taking some other medications for another condition. Is it still safe to give her Tri-Heart Plus tablets?
In clinical trials, many commonly used flea collars, dips, shampoos, anthelmintics (deworming medications), antibiotics, vaccines, and steroid preparations have been administered with ivermectin/pyrantel in a heartworm disease preventive program. For questions on specific medications, please consult with your veterinarian.
I forgot to give my dog his Tri-Heart Plus medication last month. Is he still protected? What should I do?
If the interval between doses exceeds 30 days, the efficacy of ivermectin can be reduced. Therefore, for optimal performance, the chewable tablet must be given once a month, on or about the same day of the month (Sign up for our email reminder service). If treatment is delayed, whether by a few days or many, please contact your veterinarian, as immediate treatment with Tri-Heart Plus chewable tablets and resumption of the recommended dosing regimen minimizes the opportunity for the development of adult heartworms.
Where can I buy Tri-Heart Plus tablets?
Tri-Heart Plus flavored chewable tablets can be obtained by prescription only and are available from your veterinarian.
Is Tri-Heart Plus safe for my dog?
Tri-Heart Plus flavored chewable tablets are an FDA-licensed product, indicating that they are safe and effective when used as recommended on the label. All dogs should be tested for existing heartworm infection before starting treatment with Tri-Heart Plus.
How long will the Tri-Heart Plus tablets last once removed from the blister pack?
The blister package is designed to protect the tablets from exposure to air and light. Therefore a tablet should be administered at the time it is removed from the blister foil. Also if the blister or foil is not intact (for example the foil is peeled back or there's a hole in it), the tablet should not be used.
Do Tri-Heart Plus tablets contain wheat or rice gluten?
No.
Where can I find additional information about heartworms?
The American Heartworm Society (AHS) is an excellent source of information for both pet owners and veterinarians.
Customer Reviews
96% Recommend
96% of reviewersrecommend this product
You've Already Reviewed This Item
171 Reviews
Showing 1-10 of 171 Reviews
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Changed Formula?
By Ashley on Feb 21, 2021
My dog used to eat these as if they were a treat, which made administering it each month easy. With the most recent box, he won't touch it. No matter how I try to disguise it, he spits it out. This makes me wonder if something has changed.
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Absolutely love all chewy products!
By AlexandTobiasmom on Feb 18, 2021
Not only are they the best place to get all your fur babies meds. They get it delivered fast! The prices are so very good! I'm very thankful that I use this site.
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Arrived without issue
By Mandie on Dec 28, 2020
It's so nice to not have to worry about getting a prescription from the vet. Chewy cleared it for me and it arrived quickly. And I'm thrilled that they have generic brands which are so much cheaper than name brands from the vet! This is comparable to the off brand I used to get through an Australian site which took forever to ship and always made me nervous about where it was made.
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Well within code
By Mary on Feb 25, 2021
I have ordered Heartworm meds from another company before and it would come in very close to exp date. This one came in with a couple of years in code
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Tri-Heart Plus
By Gigi on Jan 15, 2021
Excellent product. Have been using it on for many years.. Each dog has loved it, never had any kind os side-effect, and very affordable. Can't beat it.
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Generic Works
By Cynsjb on Feb 15, 2021
Generic of Heartguard works the same however it’s a bit large and hard to break up for under 5 lb dogs.
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Fast and easy
By Stormy3020 on Dec 24, 2020
It's the first time I've ever ordered prescriptions online from chewy. It was really easy and user-friendly. It shipped out fast and arrived before I expected.
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Meds for your furry friend
By Quig on Jan 28, 2021
The Tri-Heart Plus was a great price as compared to what my vet charges. I will definitely use Chewy again.
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Great for small dogs
By HelenG on Nov 14, 2020
This is the heartworm pill my dog has been taking for several years. This is the first time I have purchased them from Chewy. They were great, contacted my vet to get a prescription and send them to me.
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Tri-Heart Plus
By MickeyScuba on Oct 29, 2020
I had no idea Chewy did prescription medications until I received a flier in the box of a recent order. Their price is great so I will be ordering all prescriptions through them. They called my vet for authorization so I didn't even have to send the Rx.