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.
What if you miss a month of Heartgard?
A: Give the dose you missed immediately, then continue giving the medication on the day you've always given it. If the missed dose is more than 2 weeks late, your dog should be tested for heartworm again in six months (click here to learn why).
Can a dog miss a month of Heartgard?
Despite their best intentions, even the most attentive and diligent pet parent can occasionally forget to give their dog their monthly heartworm preventative.
Does Heartgard have to be given every 30 days?
HEARTGARD Chewables should be given at monthly intervals during the period of the year when mosquitoes (vectors), potentially carrying infective heartworm larvae, are active. The initial dose must be given within a month (30 days) after the dog's first exposure to mosquitoes.
Can I give my dog heartworm medicine every other 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. In other words, heartworm prevention medication is not effective when given every 45 to 60 days.
More useful articles on a similar topic 👇
How often do dogs need heartworm medicine?Can dogs go without heartworm medicine?
