Ativan, a brand name for the medication lorazepam, is a potent anxiolytic and sedative drug classified as a benzodiazepine. It is commonly prescribed to alleviate anxiety disorders, insomnia, and acute episodes of anxiety. Ativan works by enhancing the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that inhibits excessive brain activity, resulting in a calming and relaxing effect. This medication is available in 1mg and 2mg.