Yellow Xanax Online Without Prescription | 2 followers on LinkedIn | Yellow Xanax Bars Pill with imprint R 0 3 9 is Yellow, Rectangle and has been identified as Alprazolam 2 mg. | What is Yellow Xanax| Yellow Xanax Bars| Yellow Xanax Bar? As mentioned, Yellow Xanax is a popular type of Xanax or Alprazolam available in tablet form, often identified as the Yellow Xanax bar. In other terms, Due to its vast manufacturing, Xanax comes in several colors, shapes, and amounts of active Alprazolam, and Yellow Xanax is one of them.