Propranolol is a beta-blocker medicine used for conditions like high blood pressure, angina, and anxiety symptoms. It works by slowing down your heart's activity, reducing blood pressure and heart rate. Common side effects include feeling tired, cold hands/feet, and disturbed sleep. Find out how propranolol treats heart problems and helps with symptoms of anxiety and migraines, and how to take it. NHS medicines information on propranolol – what it's used for, side effects, dosage and who can take it. Propranolol tablets are a beta-blocker that treats high blood pressure, tremors and atrial fibrillation. It can also prevent migraine headaches. Propranolol is in a class of medications called beta blockers. It works by relaxing blood vessels and slowing heart rate to improve blood flow and decrease blood pressure. Find patient medical information for Propranolol (Inderal LA, Innopran XL, others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Propranolol is a prescription nonselective beta-blocker used to treat high blood pressure (hypertension), angina (chest pain), irregular heart rhythms, tremors, and to reduce the risk of complications after a heart attack. Propranolol is a beta-blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions. It is used after a heart attack to improve the chance of survival. It is also used to prevent migraine headaches and chest pain (angina). Propranolol is being investigated as a potential treatment for PTSD. [34][35][36] Propranolol works to inhibit the actions of norepinephrine (noradrenaline), a neurotransmitter that enhances memory consolidation. [37] Propranolol is a non-selective beta-adrenergic blocker that helps reduce the effects of adrenaline on the body. For anxiety, it targets primarily physical symptoms driven by the fight-or-flight response, such as tachycardia, tremors, palpitations, sweating, and shaking. Propranolol is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly.