Sinus arrhythmia panic and palpitations (rapid heartbeat, often accompanied by panic) can be caused by physiological factors, or by pathological factors such as hyperthyroidism and anemia. Depending on the cause, anti-thyroid drugs, iron supplements and other medications can be taken for treatment. 1. Physiological factors: strenuous exercise, emotional fluctuations, smoking, drinking, etc. can trigger sinus arrhythmia, resulting in panic, palpitations (rapid heartbeat, often accompanied by panic) and other symptoms. At this time does not need special drug treatment, only need to remove the trigger can be improved. 2. Hyperthyroidism: a common cause of sinus arrhythmia. Patients can use antithyroid drugs such as propylthiouracil to control the symptoms, and in more serious cases, it can be combined with beta-blockers such as metoprolol. 3. Anemia: It can also cause sinus arrhythmia. If sinus arrhythmia is caused by iron deficiency anemia, you can consider using iron supplements such as ferrous sulfate and ferrous succinate, as well as consuming foods with high iron content, such as pig liver. Sinus arrhythmia panic, palpitations (rapid heartbeat, often accompanied by panic), there are other causes, such as myocardial infarction, pericarditis, etc., it is recommended to consult a doctor in a timely manner to identify the cause, treat the cause, and follow the doctor’s instructions for the above medications.