After taking this I found it also worked in getting rid of my cough and made me drowsy, but I found I could not sleep...I was itchy like others have noted, but not tortured by it. It was the drunk like effect that really bothered me. Even when I woke up the next morning to go to class, I felt like I shouldn't drive because the world was spinning and I felt anxious.
The worst part, neither my doc or pharmacist warned me about the intensity of this drug.