Mar 10, - Learn about Ativan (Lorazepam) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related. Lorazepam, sold under the brand name Ativan among others, is a benzodiazepine medication. It is used to treat anxiety disorders, trouble sleeping, active. Ativan may be used for the treatment of anxiety or as a preoperative medicine. It is potentially addictive and a withdrawal syndrome may be experienced on.