I have been taking Ambien on and off now for about 1 year and at first I started having bad headaches, dizziness, loss of thoughts, dry mouth, etc, but mostly my headaches became very bad until my blood pressure went up and I was put on B/P medication, so I stop taking the Ambien and I really feel like I am just lost and very irritable, and I feel like I am in a dream and I can not stand a lot of noise or any little sound just bothers me, my eyes stay red and burning and what I feel like is a really bad head cold or allergies.