Canine Heartworm Meds, Three Main Varieties Available

Before using any type of preventative dog heartworm medicine, your dog must have a heartworm test done by a vet. It is commonly accepted and recommended by the American Heartworm Society that your dog should be tested every year. The heartworm test will reveal whether there are any microfilariae present in your dog's blood; if this is the case, your dog is infected with adult heartworms. Heartworm preventative medicines will not kill adult heartworms although they may shorten their

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