Displaying 20 results of Metoprolol Stable Isotopes Metoprolol is a common beta-blocker medication used to treat high blood pressure and other cardiovascular conditions. Metoprolol Stable Isotopes refer to isotopes of the element carbon which have a consistent number of protons and neutrons, making them ideal for use in scientific studies and medical research. These isotopes can be used to study the metabolic pathways of metoprolol and to develop more effective treatments for cardiovascular diseases.