Tonmya (cyclobenzaprine) is an updated version of flexeril, which is a CNS-acting muscle relaxant. While it has been fast-tracked by the FDA for approval, it is probably not going to be readily available to people for another few months, but is predicted to be in pharmacies by June or July.
Also, it will be a brand name drug with no generic equivalent, and therefore out of the price range for a lot of people. Anyone who has tried flexeril or other CNS muscle relaxants without success will probably not benefit from Tonmya.
If anyone here does try this new version when it becomes available, please post about your experience here so that others can hear about it.