Green Xanax bars are a specific formulation of the medication alprazolam, which is commonly prescribed to manage anxiety and panic disorders. Here's some detailed information about green Xanax bars: Green Xanax bars are a specific formulation of alprazolam used to manage anxiety and panic disorders. While they can be effective, they should be used with caution and under the close supervision of a healthcare provider. Always follow the prescribed dosage and schedule, and be aware of potential side effects and risks associated with this medication. If you have any concerns or questions, always consult with your healthcare provider.