Xanax is the brand name for alprazolam, a prescription medication belonging to a group of medicines called benzodiazepines. It is prescribed by healthcare professionals for certain anxiety and panic disorders. Because Xanax can cause dependence, misuse, and other serious complications, purchasing it in the United States is subject to prescription and pharmacy regulations. It is useful to understand how to buy Xanax online with prescription services, pharmacies, and payment methods such as credit cards and PayPal may fit into the legitimate medication-ordering process.