Displaying 4 results of Penbutolol Stable Isotopes Penbutolol is a beta-blocker medication used to treat high blood pressure and angina. Stable isotopes of Penbutolol are non-radioactive forms of the drug which are used in medical research and drug development. Isotope labeling helps in understanding the metabolism and pharmacokinetics of the drug, as well as drug interactions and side effects. Penbutolol stable isotopes are essential tools for tracing the fate of the drug in the body and improving drug safety and efficacy.