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Can I give my dog heartworm medicine without testing?

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If a heartworm-positive dog is not tested before starting a preventive, the dog will remain infected with adult heartworms until it gets sick enough to show symptoms. Heartworm preventives do not kill adult heartworms. Also, giving a heartworm preventive to a dog infected with adult heartworms may be harmful or deadly. 22 авг. 2019 г.


Can I start my dog on heartworm medicine without testing?

Puppies under 7 months of age can be started on heartworm prevention without a heartworm test (it takes at least 6 months for a dog to test positive after it has been infected), but should be tested 6 months after your initial visit, tested again 6 months later and yearly after that to ensure they are heartworm-free.

Can you give Heartgard without a test?

The American Heartworm Society recommends annual heartworm testing. It's important to never give Heartgard to any pet that has not been tested for heartworm disease. Heartworm preventative medication such as Heartgard cannot kill adult heartworms, but instead kills the baby heartworms known as microfilariae.

Can you get heartworm medication without a vet prescription?

All effective heartworm medications require a prescription in the United States. It is illegal to obtain an FDA-approved prescription medication without a prescription.

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