positively regulates voltage-gated sodium channel activity biological regulation regulation of voltage-gated sodium channel activity positive regulation of voltage-gated sodium channel activity activation of voltage-gated sodium channel activity GO:1905152 up regulation of voltage gated sodium channel activity activation of voltage-gated sodium ion channel activity up regulation of voltage-gated sodium ion channel activity upregulation of voltage-sensitive sodium channel upregulation of voltage gated sodium channel activity up-regulation of voltage gated sodium channel activity Any process that activates or increases the frequency, rate or extent of voltage-gated sodium channel activity. activation of voltage-dependent sodium channel activity 2016-04-15T21:47:57Z up regulation of voltage-gated sodium channel activity positive regulation of voltage-sensitive sodium channel biological_process positive regulation of voltage gated sodium channel activity up-regulation of voltage-sensitive sodium channel up regulation of voltage-dependent sodium channel activity upregulation of voltage-gated sodium channel activity up regulation of voltage-sensitive sodium channel upregulation of voltage-dependent sodium channel activity positive regulation of voltage-dependent sodium channel activity activation of voltage-sensitive sodium channel up-regulation of voltage-gated sodium ion channel activity up-regulation of voltage-gated sodium channel activity up-regulation of voltage-dependent sodium channel activity activation of voltage gated sodium channel activity positive regulation of voltage-gated sodium ion channel activity upregulation of voltage-gated sodium ion channel activity sl positive regulation of sodium ion transmembrane transporter activity positive regulation of cation channel activity