Lorazepam( Ativan), a benzodiazepine, is an antianxiety drug that doctors often prescribe to treat anxiety, panic disorder, and another type of phobia due to depression and stress. This oral prescription belongs to the benzodiazepine group of drugs used to treat different types of anxiety. Buy Lorazeapam Online. The oral tablet of Lorazepam is widely prescribed to treat the following conditions;