Xanax, generically known as alprazolam, is a prescription benzodiazepine medication used to treat anxiety disorders and panic attacks by calming excessive nerve activity in the brain through enhanced GABA action. It can be effective for short-term symptom relief but carries risks such as drowsiness, impaired coordination, tolerance, dependence, and withdrawal if misused. In the United States,Xanax is a Schedule IV controlled substance and requires a valid prescription from a licensed healthcare provider. Legitimate online pharmacies may offer overnight delivery only after prescription verification and pharmacist review. Offers claiming no prescription or guaranteed instant delivery should be avoided for safety and legality.