Ativan belongs to a class of drugs called benzodiazepines; It is an FDA-approved medication available in the market as prescribed Lorazepam. It is used for the treatment of anxiety and enhances the natural changes in the central nervous system. This medication is available in two legal variants forms; Ativan 1mg and Ativan 2mg. Take directly by mouth, with or without food. It takes 2-030 minutes to start work.