The generic name of Betalucel is Metoprolol. The specific reaction after stopping the drug should be judged according to the underlying disease suffered from, which may result in increased blood pressure and rapid heartbeat; it may even lead to further development of the original symptoms, such as aggravation of angina pectoris. 1. Underlying disease with high blood pressure only: If the previous dose of metoprolol is large, the sudden stopping of the drug may lead to a sudden increase in blood pressure, heartbeat suddenly accelerated, palpitations, dizziness and other uncomfortable symptoms. 2. Underlying disease with coronary heart disease: If the drug is suddenly stopped may lead to the original symptoms, such as angina symptoms continue to worsen. If you are suffering from severe acute or chronic myocardial infarction, if you suddenly stop using metoprolol, it will lead to sudden acceleration of the heartbeat, resulting in the heart in the underlying lesions on the basis of further load aggravation, the heart is therefore more serious damage, and may even lead to cardiogenic shock or sudden death. Therefore, after taking Metoprolol, do not stop taking it on your own, and follow your doctor’s instructions for specific medications.