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A member asked:

Why did xanax (alprazolam) take four hours to work?

A doctor has provided 1 answer
Dr. Alan Koenigsberg answered

Specializes in Psychiatry

too low a dose?: Xanax (alprazolam) usually begins to work within an hour or so, so i'm not sure. Perhaps you take antacids or some other medicine that slows absorption. I suggest you consult with your treating physician to get a specific answer for you specifically. It could also be you need a dose adjustment.

Answered 10/25/2013

4.8k views

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