Ativan, the brand name for lorazepam, is a prescription medication that belongs to the benzodiazepine class of drugs. It is widely used in the treatment of anxiety disorders, panic attacks, and insomnia related to anxiety. In hospital settings, it may also be used for sedation before medical procedures or to help manage seizures. Because of its calming effects on the nervous system, Ativan has proven to be an effective short-term treatment for several conditions, though it must be used carefully under medical supervision.