Lorazepam is an oral therapy prescription that has sedative and anxiolytic properties to treat anxiety disorder, panic disorder, and phobia. It belongs to the benzodiazepine group of drugs that works by increasing the activity and functions of neurotransmitters known as GABA( a calming chemical). Buy Lorazepam Onlinern. GABA is an amino acid that reduces the excessiveness of brain and nerve cells. As a result, it reduces brain hyperactivity and produces a calming and relaxing effect.