The invention relates to pyridone amide compounds of formula I and I′ or pharmaceutically acceptable salts thereof, useful as inhibitors of sodium channels:.The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders, including pain.本發明係關於用作鈉通道抑制劑之式I及I’之吡啶酮醯胺化合物或其醫藥上可接受之鹽:。本發明亦提供包含本發明該等化合物之醫藥上可接受之組合物及使用該等組合物治療各種病症(包括疼痛)之方法。