The American Heartworm Society recommends that puppies and kittens be started on a heartworm preventive as early as the product label allows, and no later than 8 weeks of age.
When should I start my puppy on heartworm medicine?
Puppies can begin heartworm preventative medication from as young as 6/8 weeks old. If your pup is a little older (age 6 months plus) it is important that she is given a heartworm test before preventative medication is given.
At what age can puppies begin receiving Heartgard Plus?
HEARTGARD Plus prevents heartworm disease in dogs as young as 6 weeks of age with no minimum weight requirement.
Can a 7 week old puppy have heartworms?
A 10 week old puppy is too young to have a heartworm infection. Your puppy could have heartworm larvae circulating in his blood but the adult heart worms take 4-6 months to develop in the heart.
How long do puppies have to take heartworm medicine?
Currently, there is also an injectable preventative that will protect your dog for up to six months at a time. The most important thing to remember with any preventative is to stick to the schedule of administering doses as recommended by your vet.
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