That is good that the flexeril is helping you. It is "supposed" to help the spasticity of this condition. I tried zanaflex and flexeril and they did nothing for my spasms and literally put me on the floor because they lowered my blood pressure which is already too low (autonomic dysfunction as well) . The only thing that breaks or at least lessons my spasms is low dose of valium. I absolutely hate to resort to it, but have found that when it gets out of control, I am always so glad I did as it spares me from the cascade of muscle pain. I was terrified of narcotics at first, but I am so thankful to know they are there for the days that this gets out of hand. I am very tough though and can take a lot of pain, so I usually do not use meds more than 2 times a week and don't have to follow with another dose as one time usually resets my threshold.