tiotropium bromide · Medicine question

How does tiotropium bromide relax the airways?

iatroX medicinesPublished 8 November 2026

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Tiotropium bromide relaxes airway smooth muscle by competitively and reversibly blocking M3 muscarinic receptors, inhibiting the airway-constricting effects of acetylcholine.

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Tiotropium (Braltus) 10mcg Inhalation PowderTeva UK Limited · emc · SmPC §5.1 Pharmacodynamic properties · Version 5Document updated 22 December 2025

Sources checked 8 November 2026

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