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 .
How long does it take for heartworm prevention to take effect?
It is not necessary to test very young puppies or kittens prior to starting preventives since it takes approximately 6 months for heartworms to develop to adulthood.
Can a dog still get heartworms while on preventative?
It is also imperative to have your pet tested yearly for heartworms while on preventative. Heartworm preventatives are highly effective, but dogs can still become infected. If you miss just one dose of your monthly medication – or give it late – it can leave your dog unprotected.
What is the success rate of heartworm treatment?
A new drug is available that does not have as many side effects, allowing successful treatment of more than 95% of dogs with heartworms. Many dogs have advanced heartworm disease at the time they are diagnosed.
How long does heartworm medicine work?
The monthly heartworm preventative we prescribe only lasts in a dog's or cat's body for one to two days, not 30 days, due to the lifestyle of the heartworm, it is only necessary for the pet to take the heartworm preventative every 30 days.
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