Yellow Xanax bars are the generic form of Xanax medication with the imprinted number R039. The strength of these yellow Xanax bars is 2 milligrams, similar to white-colored pills. The colour difference is because various companies manufacture Xanax tablets.
The street name for this type of Xanax includes “yellow school bus” because of the yellow colour and rectangular shape. Alprazolam has become the most highly prescribed benzodiazepine in the US, with more than 50 million prescriptions written yearly.
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