Generic Xanax 2 mg is known as alprazolam . Generally it is used for panic attacks . Generic Xanax 2 mg starts work within 20 to 30 minutes and it lasts up to 4 hours . It has some common side effects like dizziness , feeling tired , sleeping problems and mental problems etc . 2 mg of Generic Xanax is a high power of medication so when this tablet is taken carefully because Generic Xanax 2 mg tablets overdose is very risky for the human body .