I was taking 600 mg Neurontin, inconjunction with 1 mg Mirapex at night for RLS. After about a month I started having severe joint and body aches, so bad at times, I could hardly walk. I've been taking the Mirapex for over four years, and have had pretty good luck with it, but I was never really able to get a good nights sleep because of the severity of my RLS. So my doctor suggested the Neurontin. At the same time I started taking the Neurontin, I also started taking Chantix to help me stop smoking. After about a month, I started to develop these body aches. My doctor said it was the Chantix however, I could not find joint pain listed as a side effect. I did however find joint pain listed as a severe side effect for the Neurontin. In any case, I stopped taking the Chantix first and after three days I still didn't feel better, so I stopped taking the Neurontin. I've been off both drugs almost two weeks, and I don't feel any better. I feel like I have the flu that never goes away. Does anyone know how long it takes these drugs to get out of you system?