 Pharmacological stimulation of β2 receptors increases coronary blood flow in healthy humans and in patients with mildly atherosclerotic coronary arteries.Thus, not only does a cardio-selective β1-blocker reduce myocardial oxygen demand during exercise, but it also unveils β2-receptor-mediated coronary exercise hyperemia, while reducing the heart rate selectively.Interestingly, landiolol does not possess any sodium and calcium antagonistic properties, which makes it a more suitable cardio-selective β-blocker for patients with heart failure due to its lesser potency for negative inotropy, while offering higher potency for heart rate reduction.