Royal Canin Vet Cardiac Dry Dog Food

Descriptions:
Cardiac is a complete diet for adult dogs to support heart function in the case of chronic cardiac disease. This diet contains a low level of sodium and increased potassium. 
Key Benefits:

Vascular Support. Specific nutrients to help support the vascular system and help neutralise free radicals.
Early Renal Support. A moderate phosphorus content to help maintain renal function.
Electrolyte Balance. Potassium, magnesium and sodium content adapted to help support dogs with chronic heart insufficiency.
Cardiac Support. Nutrients which contribute to maintaining health of the cardiac muscle.