Where is your RSD? Have you had it checked to make sure nothing has changed? I have rsd from no injury or accident. I thought I had an injury when it first happend but there was nothing int he dx testing to say that. So rsd can be in some people in an area without an injury etc.Also though my rsd in my legs and eyes possibly my back had a problem that was very painful for a long period that I thought was rsd but it was not. I tend to walk and do movements weird to protect my legs when they are in a flare and that causes other problems. As for the med I would talk to your doc about trying some other med or maybe taking 1/2 or something? Not sure that dose. Feel better