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A member asked:
How long does xanax (alprazolam) last for not xr after it kicks in?
6 doctors weighed in across 2 answers
Xanax (alprazolam): Duration is 6 to 8 hours, depending on the severity of the panic attack.
Answered 8/20/2019
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Xanax (alprazolam): Immediate-release xanax (alprazolam) starts acting within 15-30 minutes. Its half-life (length of time to break down half the dose you took) is around 11 hours. In 5 half-lives (or 55 hours) a single dose of the drug & its effects would be gone from your system.
Answered 9/9/2019
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