Purina Pro Plan Veterinary Diets CC CardioCare is a novel dietary approach transforming the role of nutritional management for dogs with early stage mitral valve disease (MVD). CC CardioCare slows the progression of MVD at early stages and contains a Cardiac Protection Blend shown to improve mitral regurgitation in 30 percent of dogs with early stage mitral valve disease. For dogs with early stage mitral valve disease, CC CardioCare supports cardiac function, helps reduce left atrial enlargement, and helps stabilize mitral regurgitation.