I have a small red light unit that I purchased for under $1000 that I have used for the last 4 months 1 hour daily. It may be helping the symptoms at night somewhat, hard to tell. I also hae done some alternative treatments at the same time like shock wave therapy on the bottom of my feet and vibration plate. Sometime I think it has made a difference other nights are bad with the pins and needles. I am trying not to go on meds which is the only answer the neurologists seem to have. If you are considering red light research the best ones because it makes a difference.