Propranolol can be prescribed for any of the following conditions: migraine headaches prevention, treatment of heart disease, abnormal heart rhythms, high blood pressure and some types of tremor. This drug is also used to prevent angina and improve survival after a heart attack. The concentrated liquid that you are supposed to take may be diluted with soft drinks, applesauce, water, juice or pudding before being taken. While your condition will be regularly monitored for serious side effects, some of them you can experience when at home. Contact your doctor as soon as possible if you have any of the following serious side effects of taking propranolol: irregular heartbeat, unusual bleeding or bruising, chest pain, sore throat, trouble breathing, swelling of the feet or hands, weight gain, and some other symptoms that seem serious enough for you to report. Do not share your medicine with other people to whom it was not prescribed. Propranolol should be taken only after discussing it with your health care provider to make sure it works right for you. If you think you need to take this drug for any other condition you have, talk to a qualified professional about this possibility.