5 years ago, my doctor prescribed me the drug ladasten.  I took only ladasten and I started experiencing severe derealization.  I have been sick for 5 years.  No treatment helps me.  a year ago my doctor prescribed me a regimen of clonazepam and adderall.  I felt better for a while, but now I'm even worse than before.  I have suicidal thoughts.  no doctor explained to me how ladasten could cause derealization.  please help me.  now I'm completely desperate.