adrenaline · Medicine question

How does adrenaline relieve bronchospasm during anaphylaxis?

iatroX medicinesPublished 8 November 2026

The answer

Answer

Adrenaline acts on beta receptors on bronchial smooth muscle, causing relaxation that relieves bronchospasm, wheezing and breathlessness during anaphylaxis.

Sources for this answer

EpiPen Adrenaline (Epinephrine) Auto-Injector 0.3mgViatris (formerly Mylan or Upjohn) · emc · SmPC §5.1 Pharmacodynamic properties · Version 16Document updated 1 October 2025

Sources checked 8 November 2026

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