zanamivir · Medicine question

How does zanamivir inhibit the spread of influenza viruses?

iatroX medicinesPublished 8 November 2026

The answer

Answer

Zanamivir selectively inhibits viral neuraminidase, reducing the spread of influenza A and B viruses by blocking the release of infectious virus particles from respiratory tract epithelial cells.

Sources for this answer

Relenza 5mg/dose inhalation powder.GlaxoSmithKline UK · emc · SmPC §5.1 Pharmacodynamic properties · Version 26Document updated 21 December 2023

Sources checked 8 November 2026

Explore this learning need in CPDTake this topic to CPD, then choose your learning context and available question library.

What neuropsychiatric events have been reported during zanamivir (Relenza) use in children and adolescents with influenza?Are clinically significant drug interactions likely with zanamivir?How much lactose monohydrate does each blister of zanamivir (Relenza) inhalation powder contain?Is it known whether inhaled zanamivir passes into human breast milk?Should other inhaled medicines be administered before or after zanamivir (Relenza)?What precautions apply to zanamivir (Relenza) use during pregnancy?

loading page…

Answer

Sources for this answer

More questions about zanamivir

Answer

Sources for this answer

More questions about zanamivir

zanamivir

More clinical questions?