This device has been incredibly helpful as I have been recovering from prolonged seritonin syndrome. My nervous system has been through a trauma, as my neurologist put it. This stimulator has helped during my recovery process, which has been 6 months in the making. I have been using it for about 2 months, and I am grateful for it. You can actually feel it help put your parasympathetic nervous system in the driver's seat instead of a heightened fight or flight state. My body is super sensiti