Displaying 8 results of Esomeprazole Stable Isotopes Esomeprazole is a proton pump inhibitor used to treat acid-related digestive disorders such as gastroesophageal reflux disease (GERD) and peptic ulcers. Esomeprazole stable isotopes are non-radioactive forms of the molecule that can be used for research or diagnostic purposes. These isotopes have the same chemical and physical properties as their natural counterparts, but offer advantages such as greater accuracy in drug metabolism studies or improved sensitivity in diagnostic tests.