Displaying 3 results of Vilanterol Stable Isotopes Vilanterol is a long-acting beta-2 adrenergic agonist used in the treatment of chronic obstructive pulmonary disease (COPD) and asthma. Stable isotopes of Vilanterol are non-radioactive isotopes that have the same number of protons and electrons as the original element, but a different number of neutrons. These isotopes are used in research to study the pharmacokinetics and metabolism of Vilanterol in the body.