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Originally Posted by nanajoy  Although I have lived in Florida for nearly twenty years and dose year-round, when I lived in upstate NY our vet took them off meds during the cold months. It was the practice in our area then. I believe it has changed to year-round now. |
You are right, when heart worm preventive first came out it was given for only 6 months, in warmer weather, that changed years ago, now its year round. If you stopped giving it, then take it upon yourself to start it again, it can be fatal to your dog.