Never tried ambien before...I understand why you'de use it for anxiety, esp if you find benzos too heavy and build a tolerance easily to them. I'd be careful though, it's always risky taking anything for a purpose other than what it's meant, granted I'm sure it's not worse than taking benzos everyday, but everyone's different. I've been prescribed up to 2mg of alprazolam for the last 6, almost 7 years and have never developed a tolerance or experienced w/ds....I try to stay away from daily use, but have taken it everyday for up to 3 months at a time, I always take a week break at least if I use them daily for that long to avoid w/ds...I've also gone well over 3 months w/o taking any...however a 0.5 still does the trick the same as it did on day 1....guess I just lucked out with benzo tolerance...just be careful, once you start taking things other than what they're meant for, your going down the self medicating path and that can bring you down a lonnng road...but at the same time I get it.