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Xanax may cause you to become drowsy or less alert; therefore, driving or operating dangerous machinery or participating in any hazardous activity that requires full mental alertness is not recommended.

If you are being treated for panic disorder, you may need to take a higher dose of Xanax than for anxiety alone. High doses—more than 4 milligrams a day—of this medication taken for long intervals may cause emotional and physical dependence. It is important that your doctor supervise you carefully when you are using this medication.

As with all anti-anxiety medication, there is a small chance that Xanax could encourage suicidal thoughts or episodes of euphoria known as mania. If you notice any new or unusual symptoms after starting Xanax.