Steps You Can Take to Control Heartworm

Your best weapon against heartworm is prevention. Heartworm treatment is difficult and expensive — and further complications to your dog's health can occur. Trifexis^® (spinosad + milbemycin oxime) includes an active ingredient, milbemycin oxime, which has proven its effectiveness and has been used by veterinarians for years. Trifexis is a chewable, flavored tablet that can be offered as a treat — once a month, all year round. If your veterinarian prescribes less than year-round prevention, it is important that you administer Trifexis each month for at least three months after your dog's last exposure to mosquitoes.

Before administering Trifexis, it's important to have your dog tested by your veterinarian to make sure she is not already infected. Once your veterinarian has determined your dog is free of heartworm, you can start your dog on Trifexis, as prescribed by your veterinarian. If the test is positive, your veterinarian may discuss your treatment options.

Also consider:

• Annual testing. Make sure your dog receives a heartworm test every year. The test requires that blood be drawn from your dog, so it must be performed by your veterinarian.
• Year-round protection. Provide your dog with year-round heartworm prevention with Trifexis. If your veterinarian prescribes less than year-round prevention, it is important that you administer Trifexis each month for at least three months after your dog's last exposure to mosquitoes.

Why administer heartworm preventive year round?

Development of heartworm larvae generally takes place in temperatures above 57°F. However, temperatures below 57°F don't necessarily stop the development process but simply pause it. Larval growth resumes when the air (and mosquito) warms up¹. For this reason, year-round heartworm protection is important, as mosquitoes can also live indoors and periods of warmer temperatures during the winter can make them active outdoors as well. (Learn more about the heartworm lifecycle.)

Preventing the potentially deadly damage heartworm can inflict on your dog can be easy if you administer broad-spectrum, year-round protection.

Trifexis^® makes heartworm disease prevention simple and convenient:
One chewable tablet, once a month, all year round.

If your veterinarian prescribes less than year-round prevention, it is important that you administer Trifexis each month for at least three months after your dog's last exposure to mosquitoes.

Have questions about Trifexis? Visit our Trifexis FAQ page. Or visit About Trifexis to learn more about why Trifexis might be right for you and your dog.