Betalucil generally refers to metoprolol tartrate tablets, which can be used to treat neurosis. Metoprolol tartrate tablets can attenuate the effects of catecholamines related to physiological and psychological load, reduce heart rate, cardiac output and blood pressure. It is used in the treatment of hypertension, angina pectoris, myocardial infarction, hypertrophic cardiomyopathy, aortic coarctation, arrhythmia, hyperthyroidism, cardiac neurosis. Common adverse effects of this drug include fatigue, headache, dizziness, chills in the extremities, bradycardia, abdominal pain, nausea and vomiting. This drug is also contraindicated in combination with cardiogenic shock, sick sinus node syndrome, atrioventricular block of II or III degree, unstable heart failure, symptomatic bradycardia or hypotension, and allergy to the components of the drug. The most common symptoms in patients with cardiac neurosis are panic, rapid heartbeat and pain in the precordial area. Metoprolol tartrate has a therapeutic effect by lowering the heart rate and relieving the symptoms of panic and rapid heartbeat. This medication should be taken under the supervision of a specialist to avoid adverse reactions.