Hi, I take a form of ativan (lorazepam). I only need 0.5 to 1mg once in awhile. I haven't had any side effects from it, which is a miracle for me, but it's probably because I don't even find I need it within a months time. I use it for anxiety, and very occassionally as a sleep aid, too. I haven't found myself to be addicted to it. I take it only when I really need it, though I do find myself reacting more quickly to taking it even with mild feelings of anxiety. Still, as I said, that can be more than a month apart
I know it can be addictive, and I'm not sure about long term use. Hopefully someone else could share their opinion. Might want to try on the addiction/recovery board if no one else replies here. They may be able to know more.