Get Yellow Xanax bars Online R039 yellow Xanax bar Pills that are imprinted with R039 are Yellow Xanax Pills, and before you go and buy a yellow Xanax bar, let us elaborate on what they are. They are identified as Alprazolam 2mg pills and are used to treat anxiety and panic disorder. In addition, it belongs to the drug category known as benzodiazepines and carries fetal risk during pregnancy. Therefore, Alprazolam 2 mg is classified as a Schedule 4 controlled substance under the Controlled Substance Act (CSA) Xanax It is critical to understand before going to buy Xanax online from a reputable online pharmacy. Xanax affects the chemicals of the brain that are out of the control of anxious people. Anxiety, panic disorders, and depression-related anxiety are treated by Xanax. To get rid of anxiety, buy Xanax online from a reputable online pharmacy.