I have been on Mysoline since the age of 12 and I am now 37. I have been seizure free for 15 years. My insurance is now making me pay amcillary charges up to $395.00 per month, because I am unable to tolerate the Primidone. Are there any others with this same problem? I am attempting to get the Mysoline added to MO Consolidate HC formulary list. I would appreciate any comments. Thanks.