There are about 10 companies in the US alone that make a generic version of Xanax (alprazolam) .. I have seen .25mg tabs that were white, and yes, of course the 2mg "bars" are white .. I would call your local poison control and have them ID it based upon the imprint code - or just take the fucker!
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PAK CHOOIE UNF! Do not trust the pusher robot, he is malfunctioning, we are here to protect you..