Hi. I was put on a fampyra month trial to improve my range of walking. While i haven't noticed any difference in the walking range i have noticed i can stay on my feet longer without my back seizing up (as in stand) but i feel a lot more tired at times and a bit unbalanced, more so than before starting the trial. There is pros and cons with the drug but im not sure if its worth continuing for the long run. Has anyone else been on the fampyra and is it worth keeping?