I prescribe propranolol to certain patients with anxiety and this is a common explanation I find myself giving so great to do it here too. 🔹 How Propranolol Helps Anxiety Propranolol is a beta-blocker, which means it blocks beta-adrenergic receptors in your body. These receptors are normally stimulated by adrenaline (epinephrine) and noradrenaline, which are involved in the “fight or flight” response. By blocking these receptors, propranolol reduces physical symptoms of anxiety, such as: • Raci