Frequently asked questions

These FAQs should answer most of your questions, but if there is something more you want to know you can always contact us for more information.

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.

Do Tri-Heart® Plus tablets contain wheat or rice gluten?

No.

Where can I buy Tri-Heart® Plus tablets?

Tri-Heart® Plus flavored chewable tablets can be obtained only by prescription and are available from your veterinarian.

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. Please visit heartwormsociety.org for further details.

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Important Safety Information:

All dogs should be tested for heartworm infection before starting a preventive program. In a small percentage of ivermectin/pyrantel treated dogs, digestive and neurological side effects may occur.

HEARTGARD is a registered trademark of Boehringer Ingelheim.