Escitalopram
"I started to to have persistent stress so much I could not concentrate on anything (I'm software developer and my job requires high amount of focus). I tried exercise, eating well, deep breath without success. They were effective to decrease it a little bit but it was not enough. Then I started escitalopram (10 mg per day at 6 pm).  It was a miracle. Without any apparent reason, my anxiety disappeared. My external world did not change. I was still living in the same place with the same people, the same job; everything stayed the same but somehow I was not worried anymore. I was on it for 1.5 year. When I discontinued it, I stayed GAD free. I discontinued it because most of the external stress triggers in my life were not there any more."