Feb 20, 2021If you forget to give your dog his monthly heartworm medication, and you are a couple of days late, do not worry. Namely, you have a grace period that lasts 45 days. As long.

• Dirofilaria immitis, also known as heartworm or dog heartworm, is a parasitic roundworm that is a type of filarial worm, a small thread-like worm, that causes dirofilariasis. It is spread from host to

• Dirofilaria immitis

• Q: I forgot to give my dog’s monthly heartworm preventative, what should I do? A: Give the dose you missed immediately, then continue giving the medication on.