Any process that activates or increases the frequency, rate or extent of voltage-gated sodium channel activity.
Synonyms:
exact_synonym:
positive regulation of voltage-dependent sodium channel activity; positive regulation of voltage-gated sodium ion channel activity; positive regulation of voltage-sensitive sodium channel; up regulation of voltage gated sodium channel activity; up regulation of voltage-dependent sodium channel activity; up regulation of voltage-gated sodium ion channel activity; up regulation of voltage-sensitive sodium channel; upregulation of voltage gated sodium channel activity; upregulation of voltage-dependent sodium channel activity; upregulation of voltage-gated sodium ion channel activity; upregulation of voltage-sensitive sodium channel
narrow_synonym:
activation of voltage gated sodium channel activity; activation of voltage-dependent sodium channel activity; activation of voltage-gated sodium ion channel activity; activation of voltage-sensitive sodium channel