Ativan 1mg Tablet belongs to the benzodiazepine drug class of medicine. Ativan 1 MG for sleep is used for the treatment of anxiety, and sleep problems due to anxiety. Ativan (Lorazepam) might also be used for sedation effects before surgery or in dental procedures. It tends to be habit-forming if it is taken in big doses for a long duration. Abrupt stopping of Ativan may cause withdrawal symptoms like behavioral disorders, convulsions, tremors, etc.