What are Ativan and its uses? Ativan is a benzodiazepine for treating anxiety disorders, trouble sleeping, severe agitation and active seizure. It is the brand name for Lorazepam, and you can Buy Ativan Online from our website. Ativan is helpful in the short-term relief of symptoms of anxiety. It is used to treat alcohol withdrawal and chemotherapy-induced nausea. It can also be used during surgery to interfere with memory formation and sedate mechanically ventilated people. It is used with treatments for acute coronary syndrome due to the use of cocaine.