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Medicines lidocaineQuestion & answer

lidocaine · Medicine question

How does lidocaine block pain signals in nerves?

iatroX medicinesPublished 8 November 2026

The answer

Answer

Lidocaine reversibly blocks nerve impulse transmission by preventing sodium ions from moving inward through the nerve membrane.

Sources for this answer

Xylocaine 10mg SprayAspen · emc · SmPC §5.1 Pharmacodynamic properties · Version 20Document updated 6 November 2018

Sources checked 8 November 2026

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lidocaine

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