Generic Xanax 2 mg is used to manage panic disorder and it is used for control panic attacks . Generic Xanax starts working in 20 to 30 minutes after taking the tablet .It has some common side effects like dizziness, tiredness, sleep problem , and memory problem . Generic xanax works up to 6 to 8 hours after taking this tablet . Generic Xanax 2 mg is high risk for health due to overdose .