Posted by theo on May 16, 2004, at 9:43:09
In reply to Xanax XR - Still haven't gotten the answer... :(, posted by becksA on May 16, 2004, at 9:19:18
Maybe I'm not fully understanding your question because I thought I was pretty clear.
The half life for Xanax XR is around 12 hours, so if you take it at 7:00am, you will start to lose the effects around 7:00pm, aka dinnertime.
This is why my doc has me take it twice daily. If I took one 2mg tablet daily, I felt tired and by evening had anxiety, when I took 1mg tablets twice daily (every 12 hours) I wasn't constantly hitting peaks and valleys because 1mg dosing didn't make my tired, plus I had a constant level of it because I took it every 12 hours (twice daily) because if you use common sense, something with a half life of only 12 hours should be dosed twice daily. Even if the makers of Xanax try to market XR as once daily dosing, it's not realistic because the half life is only 12 hours!!!
poster:theo
thread:347377
URL: http://www.dr-bob.org/babble/20040515/msgs/347383.html