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What's the half life of Xanax and Ativan
What I'd like to know is what is the half life of Xanax and what is the half life of Ativan.

Thanks,
Andy
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Xanax as an faster onset of action, by mouth it's take around 10-15 minutes before you notice it's effect BUT it's the benzo with the shoter half-life around 6-12 hours.

The Ativan onset of action don't kick in very fast, normally take 1-2 hours before you feel something, unless you use the one who dissolve under the tongue, and the half-life is around 10-20 hours, it's action on the anxiety last longer than the Xanax, but it's milder also... not enough to kill a panic attack completly...

And remember that everyone is different... and also each benzo act differently and some of them are better for a panic disorder, other are better for general anxiety... even if they all affect the Gaba-A receptors in the brain... The ativan have a strong amnesic effect and may not be suitable for panic attacks and better before a surgery...that's my experience and no wonder why it's giving very often before a surgery...the Xanax is better to kill a panic attack, even if it's not very effective to stop a panic attack who is already started with a benzo because they all take some times before reaching a peak level in the blood and the Clonazepam-Klonopin is better for anticipatory anxiety and prevent panic... The Valium have a stronger muscle relaxant effect and for sedation in case of insomnia but will not be very powerful for a panic disorder....

And for the Xanax usually 0.5mg = 1 mg of Ativan...
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