Royal Canin Cardiac is a dry dog food for adult dogs with heart conditions including chronic heart failure, valvular disease or congenital cardiac issues. The recipe is built to support heart muscle function and reduce the workload on a compromised cardiovascular system.

Reduced sodium helps manage fluid retention common in heart disease, while added taurine and L-carnitine support heart muscle metabolism — both nutrients are critical for cardiac function and often supplemented in cardiac patients. Antioxidants protect heart tissue from oxidative damage, and high-quality protein maintains lean muscle without overloading the system. Veterinary authorisation required for long-term feeding.

Vets prescribe Cardiac alongside cardiac medications for dogs diagnosed with heart disease. Owners stick with it because dogs typically tolerate it well and the supportive nutrition helps maximise quality of life through the disease's progression.