Answer
Umeclidinium bromide is a long-acting muscarinic receptor antagonist that produces bronchodilation by competitively inhibiting acetylcholine binding to muscarinic cholinergic receptors on airway smooth muscle.
Sources for this answer
- Incruse Ellipta 55 micrograms inhalation powder, pre-dispensedGlaxoSmithKline UK · emc · SmPC §5.1 Pharmacodynamic properties · Version 18Document updated
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