What is Ativan (Lorazepam)? Ativan, also known by its generic name Lorazepam, is a powerful benzodiazepine medication prescribed to treat: Anxiety disorders Insomnia caused by anxiety Seizure disorders (in some cases) Pre-anesthesia sedation Ativan works by calming the brain and central nervous system. It enhances the effects of a neurotransmitter https://pllsus.com