The generic name for Betalucel is metoprolol, which can be taken when suffering from supraventricular tachycardia. Supraventricular tachycardia can be caused by tachyarrhythmias, such as sinus tachycardia, atrial tachyarrhythmia, or it can be caused by hyperthyroidism, where the heart rate can increase significantly, all of which can lead to an increased heart rate. Patients may experience palpitations, dizziness, and chest pain. Therefore, conditions such as supraventricular tachycardia need to control the rhythm of the ventricular beat, and can take metoprolol, which is a beta-blocker and belongs to the more important anti-arrhythmic drugs used to treat tachyarrhythmia and slow down atrioventricular conduction. For patients with severe disease, cardiac radiofrequency ablation or surgery is an option. Metoprolol should not be used in patients with renal failure, otherwise the condition will worsen and it will directly affect the health of kidney function. Metoprolol should not be taken when driving or operating machinery, as it can affect concentration and lead to distraction.