February Heartworm Preventive Schedule

Repeatedly we have made the point that heartworm preventives are monthly medications.

They are not every 33 days medications.

This little dog found a home. He gots his heartworm preventive on time in February, one less obstacle to his adoption.

They are not every 34 days medications.

They are not every six weeks medications!

Periodically, then, they question comes up, “Should I adjust my heartworm preventive administration for February?”

No.

If you normally give your heartworm preventive on the 1stof every month, give it on the first of February, then again on the first of March.

If you normally give it on the 30th or 31st, give it on the 28th (29th on Leap Year), then next on the 30th of March.

Heartworm preventive medications have such a wide safety margin that you could safely give it more often than directed, but administering it on an interval greater than every 31 days puts your pet at risk for becoming infected with heartworms, which could be deadly.

See you tomorrow, Dr. Randolph.

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