Because no preventative is 100% effective and many pet owners (including those of us who work in veterinary medicine) are not always diligent to give their dog's heartworm preventative exactly once a month, we do also recommend testing your dog every year for heartworm disease, even if they remain on a preventative .
Do dogs need to take heartworm pills every month?
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.
How often should I give my dog heartworm medicine?
Because heartworms must be eliminated before they reach this adult stage, it is extremely important that heartworm preventives be administered strictly on schedule (monthly for oral and topical products and every 6 months or 12 months for the injectable).
Is it OK to skip a month of heartworm medicine?
Most of the monthly heartworm medicines have a safety factor of at least 15 days of protection if a dose is missed. This means that if you're just a week or two late, your pet is likely still within that window of protection and would be unlikely to become infected during that time.
Should you give Heartgard every month?
However, due to the heartworm life-cycle, it is likely that giving the medication every 45 to 60 days, rather than every 30 days, will allow immature heartworms to develop into adult heartworms.
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