Ativan, the brand name for lorazepam. Buy Ativan Online is a prescription medication in the benzodiazepine class. It’s commonly used to alleviate symptoms of anxiety, insomnia, and anxiety related to depression. Ativan works by enhancing the effects of a neurotransmitter called gamma-aminobutyric acid (GABA) in the brain. GABA helps to reduce the activity of neurons, thus producing a calming effect on the nervous system. While effective for short-term relief, it should be used cautiously, as it carries a risk of dependence and side effects, under a doctor’s supervision.