... three weeks ago. My neurologist prescribed me Cymbalta which I only took two because they really made me nauseous. Since the Week of Thanksgiving, I have been unable to sleep only 3-4 hour a night. Cannot nap during daytime and it's hard to consecrate. Besides being exhausted from insomnia I am nauseous, anxious and have loss of appetite, and no energy. Has anyone experienced this and if so did you return to using Klonopin. Any help is sure appreciated.