 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] -234-2345.The precautions of Hemangeol Oral: See also Side Effects section. Before using propranolol, tell the doctor or pharmacist if your child is allergic to it; or if your child has had a serious reaction to other beta blockers (such as metoprolol); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using this medication, tell the doctor or pharmacist your child's medical history, especially of: breathing problems (such as asthma), certain heart problems (such as heart failure, slow heart rate, second- or third-degree atrioventricular block), severe allergic reactions, a certain type of tumor (pheochromocytoma), very low blood pressure. Before having surgery, tell the doctor or dentist about all the products your child uses (including prescription drugs, nonprescription drugs, and herbal products). This drug may make your child dizzy. Do not let your child do any activity that requires alertness until you are sure your child can perform such activities safely. This formulation of propranolol is not usually used by adults. It is unlikely to be used during pregnancy </s>