2 weeks ago, I purchased 1,000 Xanax bars from sinmed on Alphabay. When I took one, I immediately noticed a strange taste (unlike the taste of alprazolam) that stayed in my mouth for around 12 hours. One bar didn't do anything but make me tired so I proceeded to take another; although I felt a little "barred out", it definitely was a different kind of high than I was used to. My friends took some the next day and reported the same thing.
Fortunately, my Benzos test kit arrived today and here's the results:
https://s11.postimg.org/dy5ztrl82/Bunk_Xanax.jpg
It seems like sinmed is pressing a Z drug and calling it Xanax. I would advise you look elsewhere for bars.
What the hell is with vendors pressing bars without alprazolam. They must have the same plug and don't bother testing it before sending product out. Or it's all one person with different vendor accounts who doesn't give a shit at all.