One of the beta-adrenoceptor-blocking drugs (beta blockers), propranolol hydrochloride is used in the treatment of angina pectoris, myocardial infarction, certain abnormal rhythms of the heart, and high blood pressure (hypertension). It also prevents attacks of MIGRAINE, and is used for certain anxiety states particularly those associated with unpleasant bodily sensations, such as palpitations.