Betaxolol should be taken on an empty stomach, i.e. one hour before or two hours after meals. Betaloc, i.e. metoprolol tartrate, is commonly used clinically for the treatment of hypertension, angina pectoris, myocardial infarction, hypertrophic cardiomyopathy and so on. As food will promote the absorption of metoprolol tartrate, it is easy to cause bradycardia, which can seriously trigger the occurrence of dangerous events such as chills in the limbs and heart failure. Therefore, Metoprolol Tartrate should be taken on an empty stomach, i.e. one hour before or two hours after meals. In addition, patients taking metoprolol tartrate should individualize the dose to avoid bradycardia. Also do not change the dosage or adjust the dosing interval without authorization, and do not stop the medication abruptly. Discontinuation of the medication usually needs to be discontinued after a slow reduction of the dosage under the guidance of a doctor, otherwise it may lead to deterioration of the condition. During the administration of metoprolol tartrate, patients may experience adverse reactions such as fatigue, headache, and dizziness. Cardiogenic Shock. Metoprolol tartrate is contraindicated in patients with sick sinus node syndrome, severe peripheral vascular disease with risk of gangrene. Metoprolol tartrate is a prescription drug and it is recommended that it be used in accordance with medical advice to avoid adverse effects.