If only using Heartgard Plus during mosquito season, the first dose should be given no more than one month after a dog's first exposure to mosquitoes and the final dose should be given no more than one month after a dog's
last exposure to mosquitoes.
The final dose must be given within one month after
the last exposure to mosquitoes.
Treatment with fewer than three monthly doses after
the last exposure to mosquitoes may not provide complete heartworm prevention.
If your veterinarian prescribes less than year - round protection, it's important to administer Trifexis for at least three months after your dog's
last exposure to mosquitoes.
Prevents heartworm disease in dogs when used monthly for at least three months after
the last exposure to mosquitoes.
If you do not administer Trifexis monthly throughout the year, continue administering the medication for at least three months following
the last exposure to mosquitoes.
If your veterinarian prescribes less than year - round prevention, it's important to administer Trifexis each month for at least three months after your dog's
last exposure to mosquitoes.
Heartworm Prevents heartworm disease when used monthly for at least three months after
the last exposure to mosquitoes.
The final dose must be given within a month (30 days) after the dog's
last exposure to mosquitoes.
So remember to give your dog her heartworm prevention after
her last exposure to mosquitoes.