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Xanax(Alprazolam) is a fast-acting tranquilizer from the family of drugs called benzodiazepines, and the onset of action is 20 to 60 minutes. The duration of action for full release is six hours, and the extended-release is 12 to 24 hours. Buy Green Xanax Bars Online as it belongs to the class of drug called Triazolobenzodiazepine( TBZD) fused with a triazole ring, a fast-acting tranquilizer of medium duration.
