I have missed 2 months of heartworm prevention for my dog. What should I do? You need to consult your veterinarian, and immediately re-start your dog on monthly preventive—then retest your dog 6 months later.
What happens if I miss a month of heartworm medicine for my dog?
What if my pet has missed a month of heartworm prevention? The simplest answer to those who miss a month of heartworm prevention is to give the dose immediately and restart the monthly preventative schedule.
How Long Can dogs go without heartworm medicine?
The common consensus is that it takes about 40‒50 days for heartworm larvae to mature to the point where heartworm preventatives no longer work. So, from the initial mosquito bite to the beginning of maturation, there is an approximate 45-day grace period that a heartworm preventative can provide protection.
What happens if I forget to give my dog heartworm medicine?
A dog who has missed just two monthly doses of preventative or is late for a heartworm injection can become infected with heartworms.
Is monthly heartworm medication necessary?
If at the initial test, your dog is found to have heartworms, treatment will be needed before prevention can begin. However, if your dog is in the clear, he can be started on monthly medication to protect him from the disease.
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