Aten 25 MG Tablet is a medicine that contains Atenolol. It is used to treat high blood pressure, angina pectoris (chest pain or discomfort caused when your heart muscle does not get enough oxygen-rich blood), arrhythmias (irregular heartbeat), thyrotoxicosis (the symptoms caused by the over secretion of the thyroid hormone). It is also used to reduce strain on the heart following a heart attack and to prevent migraines. Aten 25 MG Tablet relaxes blood vessels resulting in an improved blood flow to the heart. It also slows down the activity of your heart and reduces the rate and force of the heartbeats. As a result, the pressure at which blood is pumped and the strain on the heart is reduced. Aten 25 MG Tablet may cause dizziness, headache, breathing difficulty, and low blood pressure. If you feel dizzy or tired after taking this medicine, avoid driving vehicles or operating machines. Do not take this medicine if you are allergic to it. It can make you feel drowsy when you stand up suddenly, so it is advised that you get up slowly from a sitting or a lying position. Aten 25 MG Tablet can be taken with or without food. For the ease of remembering, take this medicine at the same time every day. Do not stop taking this medicine without consulting your doctor. Abrupt stopping the use of this medicine may lead to more serious conditions like a stroke or a heart attack. Aten 25 MG Tablet may not be suitable for all people. It may not be recommended for you if you have asthma (or any other breathing conditions), kidney or liver conditions. Consult your doctor before taking this medicine if you are pregnant, planning a pregnancy, or are breastfeeding. Make sure to eat a healthy and balanced diet. Appropriate lifestyle changes like a low-fat diet, exercise, and stop smoking to feel better besides using this medicine.