Metoprolol Tablets Metoprolol (Lopressor®) is a medication that lowers your blood pressure and heart rate, making it easier for your heart to pump blood to the rest of your body. The specific agent in on-market formulations of metoprolol is either metoprolol tartrate or metoprolol succinate, where tartrate is an immediate-release formulation and the succinate is an extended-release formulation (with 100 mg metoprolol tartrate corresponding to 95 mg metoprolol succinate). Metoprolol is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. Metoprolol tartrate (Lopressor) is a beta blocker that treats high blood pressure and other heart conditions. Some of the most common metoprolol side effects include dizziness, tiredness, and diarrhea. The main difference between metoprolol tartrate and metoprolol succinate is that metoprolol tartrate is only available as an immediate-release tablet which means it must be taken several times per day, whereas metoprolol succinate is an extended-release tablet that can be taken once a day. Lopressor (metoprolol tartrate) Tablets and Injection is a selective beta-adrenoreceptor blocking agent (beta-blocker) used to treat high blood presure (hypertension), angina, and heart attacks. Titrate dosage based on tolerability and hemodynamic parameters (i.e., heart rate, blood pressure). Metoprolol Tartrate Tablets should preferably be administered with or following meals. The maximum daily maintenance dosage is 100 mg orally twice daily. Easy-to-read patient tips for metoprolol-tartrate covering how it works, benefits, risks, and best practices. Acute Myocardial Infarction Metoprolol tartrate is used orally and IV to reduce the risk of cardiovascular mortality in hemodynamically stable patients with definite or suspected acute MI. The term MI is used when there is evidence of myocardial necrosis in the setting of acute myocardial ischemia. [807] Find patient medical information for Metoprolol (Lopressor, Toprol XL, others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings.