Xanax XR 3mg is a triangular-shaped controlled substance pill. The active substance of the Xanax brand is alprazolam. And it is included in the benzodiazepines drug class. It is considered a mild tranquilizer. Before using, ask your doctor for complete information about Xanax XR. It can be more expensive in your nearest drugstore. But you can buy Xanax online at a low price.
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