I have SFN and was taking Pregabalin. I no longer take Pregabalin and get better results with EB-N6. My symptoms are less troublesome but not gone, YET. I found I am not able to take EB-N6 as prescribed as it is very potent. I give it all the credit for my improvement. I suggest you also look into red light therapy. That is the short story of a 3+ year journey. Good luck!