How long do you have to take alprazolam to be physically addicted?

Xanax (alprazolam) addiction. Any long term and inappropriate use [by black market or by bad docs] leads to addiction. Any med that is used wrongly to treat symptomatically instead of using a good med that treats the cause of a disease may lead to addiction. No benzodiazepine is allowed by law to be used for months, but a lot of docs use it for years to falsely calm patients instead of treating the cause of problems.