To make sure Azor is safe for you, tell your doctor if you have: 1  kidney disease; 2  liver disease; 3  coronary artery disease;  angina (chest pain), congestive heart 1  failure; high levels of potassium in your blood;  if you are on a low-salt 1  diet; if you are 75 years or older;  or. if you have recently had a heart attack.