Answer
Vilanterol in Relvar Ellipta is a selective long-acting beta2-adrenergic agonist whose effects are attributable at least partly to stimulation of intracellular adenylate cyclase, which converts ATP to cyclic AMP; increased cyclic AMP causes bronchial smooth muscle relaxation.
Sources for this answer
- Relvar Ellipta 184 micrograms/22 micrograms inhalation powder, pre-dispensedGlaxoSmithKline UK · emc · SmPC §5.1 Pharmacodynamic properties · Version 19Document updated
Sources checked