It’s important to note that withdrawal symptoms can vary depending on the individual and the specific circumstances of their addiction. That being said, Xanax withdrawal symptoms can start as early as 6-12 hours after the last dose, but may take up to 24-48 hours to fully develop. The acute phase of withdrawal usually lasts around 1-2 weeks, with symptoms peaking around days 2-4 and gradually tapering off. However, some individuals may experience more protracted withdrawal symptoms that can last for several months or longer. If you or someone you know is experiencing Xanax withdrawal symptoms, it is important to seek professional medical help.