Xanax XR was the first tranquilizer I got.. I'm not sure if it's any better, but you're not as out of the loop as on the regular Xanax. Better test it before driving, though. Hehe.

What are you taking it for?

I took it to prevent panic attacks, but since it's slow acting, it was no use, I couldn't tell in the morning whether I should take it or not. Maybe it's better for daily use... I switched to regular Xanax pretty soon.