My wife is having a hard time breathing. She has been in great chronic pain for about 3 years, endured much more than she should and cutting back on her Oxycodone (4 x 15 mg) and (Methadone 4 x 10 mg), trying to use Tizanidine (up to 3 per night 4mg). She has backed a prescription about 50% consistently for the last 90 days. I read that Tizanidine can cause difficulty breathing if one is overdosing, however, my wife is taking only moderate amounts. Any ideas what may be causing her respiratory system to fail? Who do you recommend I talk with or see? ***@****