I tried to come off pregabalin last year as I wasn't sure if it was working as well as it had. I was on 400mg and reduced over several weeks. I felt sick, dizzy and my arms and legs felt shaky and I had that knotted dread feeling in my stomach. As I neared the last week I realised they were working so went back to taking them. I am on 600mg a day now as I have had a stroke and suffer with pain in my affected side.