Metoprolol, sold under the brand names Lopressor and Toprol-XL among others, is a medication used to treat angina, high blood pressure and a number of conditions involving an abnormally fast heart rate. [5] Metoprolol is a beta-blocker that affects the heart and circulation (blood flow through arteries and veins). Metoprolol is used to treat angina (chest pain) and hypertension (high blood pressure). 英文别名： (2R)-metoprolol; d-Metoprolol; (R)-metoprolol; (R)-1- isopropyl amino-3- [4- (2-metoxyethyl)phenoxy]propan-2-ol; (+)-Metoprolol；Metoprolol；MET；Lopreser；Seloken；Betaloc；Lopresor；Betaloc；Seloken CAS号：81024-43-3 分子式：C15H25NO3 结构式： 美托洛尔的化学结构式 分子量：267.36400 Metoprolol is in a class of medications called beta blockers. It works by relaxing blood vessels and slowing heart rate to improve blood flow and decrease blood pressure. 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. 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 Learn about the side effects of metoprolol, from common to rare, for consumers and healthcare professionals. 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. 美托洛尔. 美托洛爾[5][6] （INN：metoprolol）又稱 美托普洛[7]，旧名 美多心安[8]，是一種選擇性的 β 1 -受體阻斷劑 [9]，用於治療 高血壓 、 心绞痛，還有一些與 心搏过速 有關的病徵（室上性心动过速、室性心律失常等） [9]。 Metoprolol 是一种具有口服活性的、选择性的 β1-肾上腺素受体 (β1-adrenoceptor) 拮抗剂。 Metoprolol 具有抗炎、抗肿瘤和抗血管生成的特性。.