I wonder whether anyone has used a tens machine and if so how useful has it been. I get a lot of pain in my legs and even with 900mg of Gabapentin plus 150mg of Tramadol the pain persists. ed the machine last night with two pads on my yhigh muscle where the pain was worse. To my surprise the pain lessened and after twenty minutes after I took the pads off the pain did not return! I will certainly try again but wonder whether there may be any pitfalls.