Voltage-gated sodium channel (site of action for local anesthetics) (VGSC (if referencing the channel class); specific subtypes (e.g., Nav1.7) may be used in primary literature, but not specified here due to lack of explicit information in the search results.)

Local anesthetics produce analgesia by reversibly inhibiting voltage-gated sodium channels in neuronal membranes, thereby blocking the initiation and propagation of action potentials in peripheral nerves[1][2][4][5]. This mechanism prevents the transmission of pain and other sensory modalities from local tissue to the central nervous system, resulting in localized loss of pain sensation. Different classes of local anesthetics (amides and esters) act primarily at this molecular site, and their tissue effects can be modulated by formulations (e.g., liposomal bupivacaine) or adjuncts (e.g., vasoconstrictors) to prolong analgesia or reduce systemic toxicity[1][2][3][5].

Other names

Sodium channelVoltage-gated Na+ channelNav channelLocal anesthetic receptor (site)

Reversible blockade of voltage-gated sodium channels in neuronal membranes, inhibiting action potential propagation and thus preventing pain transmission[1][2][4][5]