I had been taking Xanax .25 at night for over a couple years for insomnia and about a year ago I just stopped taking them... no withdrawl... nothing... (me not thinking that .25 was that much so I just stopped and never thought about if I was doing myself harm by just stopping). Now I'm having trouble sleeping again and started taking .25 every night for a week.. then every other night.. then as needed... sometimes I don't take any for a week at a time. I've read that .25 can cause severe withdrawl and I'm wondering why I never did.. but as to not play with fire... whats the guidelines on taking this stuff... do I cut down by 1/2... 1/4... ? and what happens when I need it for a week straight.. have I put myself in "withdrawl danger" when I stop? I ask only because simply I was maybe "lucky" last time and didn't have a major problem .. who knows what could happen this time. Is .25 alot once a day? Do some people simply not have withdrawl symptoms?