Atrial flutter is a type of abnormal heart rhythm that is characterized by a rapid and irregular heartbeat. The most common first-line drug for treating atrial flutter is a beta-blocker. Beta-blockers are medications that slow down the heart rate by blocking the action of adrenaline and other hormones that stimulate the heart. These drugs can help to reduce the symptoms of atrial flutter, such as palpitations, dizziness, and shortness of breath, as well as reduce the risk of complications from the condition, such as stroke or heart failure. Other medications, such as calcium channel blockers or antiarrhythmic drugs, may be used if beta-blockers are not effective or if a patient has additional medical conditions that need to be treated. In addition to medications, lifestyle changes, such as reducing alcohol consumption, quitting smoking, and getting regular exercise, may also help to reduce symptoms and manage the condition.