I have been using NeuraVite for a number of years. I got it from my Podiatrist, but I moved and switched to another Podiatrist. They don't sell NeuraVite. I went a couple of months without it and certainly had pain in my feet. My wife searched the Internet and found it and ordered1 bottle for me. When it came time to reorder I found the3 get1 free and ordered immediately. Great deal product was really a great price. Thank you!!