Ativan, also known by its generic name lorazepam, is a medication that belongs to the benzodiazepine class. It is primarily used to treat anxiety disorders, insomnia, and seizures. With its calming effects, Ativan 2mg works by enhancing the activity of a neurotransmitter called gamma-aminobutyric acid (GABA) in the brain. This neurotransmitter helps to reduce the excessive brain activity that leads to anxiety and other related conditions.