At what age do I start my puppy on heartworm medicine? And why is this the chosen heartworm medicine for herding dogs? I know there are reactions to other heartworm medicines.
Start your puppy on heartworm preventative at 3 months of age. I did not realize there was a "chosen " heartworm preventative for hearding dogs but Interceptor does kill many different types of intestinal parasites as well as prevent heartworm dz. good luck, vetcare