Xanax contains the active ingredient alprazolam and is a popular and widely used medication for a variety of anxiety related disorders including anxiety caused by depression and panic attacks. Xanax or Alprazolam 1mg is a short-acting benzodiazepine that is used for a number of disorders, such as anxiety, panic attacks, alcohol withdrawal, depression, etc. Xanax/Alprazolam affects the chemical activity in the brain to promote sleep and to reduce worry and anxiety. The medicine is available to buy without prescription in strength of 1mg at UK Sleeping Pills.