And for what it's worth, a heartworm - positive diagnosis is not uncommon in dogs that were maintained on monthly heartworm medications. (thedogplace.org)
Making monthly heartworm medication part of your pet's health care regimen makes it easier to remember. (1800petmeds.com)
For many pet owners, annual heartworm testing is a must, as well as monthly heartworm medication. (second-opinion-doc.com)