Buy Lorazepam Online. It is an oral medication used to treat anxiety, panic disorder, and phobias (with or without agoraphobia). It belongs to the benzodiazepine group of men that works on GABA (A) and increases the level of GABA. Lorazepam( Ativan) is used to treat severe anxiety in the short term; Lorazepam is a fast-acting medication that should not be used for more than four weeks. Lorazepam is used in the short-term management of severe anxiety, and it is fast-acting and Helpful in treating panic attacks with a sudden onset.