Displaying 1 results of Ethacizine Stable Isotopes Ethacizine is an anti-arrhythmic medication that is used to treat irregular heartbeats. Ethacizine Stable Isotopes are isotopes of ethacizine that have a stable nucleus and do not decay over time. These isotopes are used in research and medical applications, such as drug metabolism studies and clinical trials. They are also used in the development of new drugs and therapies that are more effective and have fewer side effects.