Take special care with Diovan:  if you have liver disease.  if you have severe kidney disease or if you are undergoing dialysis.  if you are suffering from a narrowing of the kidney artery.  if you have recently undergone kidney transplantation (received a new kidney).  if you are treated after a heart attack or for heart failure, your doctor may check your kidney function.  if you have severe heart disease other than heart failure or heart attack.  if you are taking medicines that increase the amount of potassium in your blood.