I have attempted to switch from Mysoline to Primidone, but was unable to do so, due to side effects. My insurance company is charging me $295-395.00 per month, since Mysoline is not on the formulary list. Are there other people having this same problem? I have contacted MO Consolidated HC, filed an appeal and was denied. I have also been unsucessful in obtaining assistance with local Senators. If you have this same problem please e-mail me. I would like to get Mysoline on the formulary list! I plan to continue to contact local representatives and board members to attempt to remedy this problem. I would love more input. Thanks.