There is no one better between Metoprolol Tartrate Tablets and Metoprolol Succinate Extended-Release Tablets, and it is recommended to choose the right medication for you under the guidance of your doctor. The main ingredient of both Metoprolol Tartrate Tablets and Metoprolol Succinate Extended-Release Tablets is metoprolol, which belongs to beta-blockers and plays a role in decreasing myocardial contractility. Both are used in the treatment of high blood pressure, angina pectoris, heart failure and so on. The main difference is that the drug effect lasts for a different period of time, metoprolol tartrate has a shorter half-life of 3 to 5 hours, which usually lasts for about 12 hours. While the effect of metoprolol succinate extended-release tablets will last longer, with a smooth blood level, the effect can usually last more than 24 hours. The adverse effects of Metoprolol Tartrate Tablets and Metoprolol Succinate Extended-Release Tablets are also relatively similar and may include side effects such as fatigue, headache, dizziness, abdominal pain, nausea, vomiting, and bronchospasm in those with bronchial asthma or wheezing symptoms. For cardiogenic shock, sick sinus node syndrome, II, III degree atrioventricular block, decompensated heart failure is prohibited. In summary, the efficacy of the two is roughly the same, just the difference in the duration of action, there is no good or bad, patients are advised to choose the appropriate type under the guidance of the doctor can.