It was explained to me that Cymbalta takes time to adjust to and what it gradually does is it reduces the "fight and flight" that a person is living in constantly as that is part of the ptsd challenge. It does take about three weeks to build up in the system and at first a person can feel tired and weird, I felt that myself.

Well, while it helps in reducing the constant fight and flight it doesn't stop all the emotions and that is what a therapist is there to help the patient work on. It's identifying true emotion verses triggers of the fight/flight response. That way once the emotions are understood the person can learn to work through them.