Green Xanax Bars are an anti-anxiety and seizure medication that is taken orally. Mild insomnia, as well as depression and panic disorder. It is a benzodiazepine that has a calming effect on the mind and CNS. It is a high-potency formulation that has earned the moniker "HULK Xanax" due to its potency. It has four grooves for easy breakage and the imprint "R039" on one side and two on the other.