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Protecting Your Dog from Heartworm Disease

Protecting your dog from heartworm disease is easy with one Trifexis® (spinosad + milbemycin oxime) chewable tablet, once a month, year round. For those who choose less than year-round protection, it is important that you administer Trifexis for at least three months after your dog's last exposure to mosquitoes. However, because it can take up to six months or longer for heartworm disease symptoms to manifest in your dog, it is advisable to administer Trifexis monthly — even in winter or other times you don't see mosquitoes. In fact, CAPC and the American Heartworm Society recommend year-round treatment with a broad-spectrum parasite control product without interruption, regardless of where you live1.

Heartworm Incidence Map

Map © American Heartworm Society: www.heartwormsociety.org/veterinary-resources/Compliance.jpg The severity of heartworm incidence as shown in this map is based on the average number of cases per reporting clinic. Some remote regions of the United States lack veterinary clinics; therefore, there are no reported cases from these areas.

Heartworm Incidence Map

Map © American Heartworm Society: www.heartwormsociety.org/veterinary-resources/Compliance.jpg The severity of heartworm incidence as shown in this map is based on the average number of cases per reporting clinic. Some remote regions of the United States lack veterinary clinics; therefore, there are no reported cases from these areas.

Trifexis works by killing heartworm larvae after an infected mosquito has bitten your dog, and before the larvae mature and become adult heartworms. Since it takes a month for the larvae to mature, you must administer Trifexis monthly for it to be effective.

More information about heartworm disease can be found on the American Heartworm Society website at www.heartwormsociety.org. Or use the links on the left to view information we've summarized here about heartworm, its dangers, prevention, and lifecycle.

Have questions about Trifexis? Visit our Trifexis FAQ page.

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Trifexis featured on Lifetime's Balancing Act

Author and celebrity veterinarian Dr. Ernie Ward, along with Elanco's Dr. Lisa Young, recently appeared on Lifetime's morning show, The Balancing Act.

Important Safety Information

Serious adverse reactions have been reported following concomitant extra-label use of ivermectin with spinosad alone, one of the components of Trifexis chewable tablets.

Treatment with fewer than three monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. Prior to administration of Trifexis, dogs should be tested for existing heartworm infection. Use with caution in breeding females. The safe use of Trifexis in breeding males has not been evaluated. Use with caution in dogs with pre-existing epilepsy.

The most common adverse reactions reported were vomiting, depression/lethargy, itching, decreased appetite, and diarrhea. To ensure heartworm prevention, observe your dog for one hour after administration. If vomiting occurs within an hour of administration, redose with another full dose. Puppies less than 14 weeks of age may experience a higher rate of vomiting.

View full product label for complete safety information.

References

1. Companion Animal Parasite Council website at: http://www.petsandparasites.org/other/guidelines.html, retrieved March 14, 2011

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