Vetmedin (Pimobendan) is in a class of heart treatments named "inodilators" used in the management of certain types of congestive heart failure in dogs. These medications increase the heart muscle's ability to pump blood. Vetmedin increases the ability of the heart muscle to contract and also open up the blood vessels taking blood to and away from the heart. This reduces the heart's workload as it pumps blood throughout the dog's body. Specifically used for the management of the signs of mild, moderate, or severe congestive heart failure in dogs. The safety of pimobendan has not been evaluated in dogs younger than 6 months of age.