Lorazepam is a prescription medical treatment used to manage anxiety. Lorazepam belongs to a class of drugs known as benzodiazepines which act on the brain and nerves (central nervous system) to produce a calming effect that relieves symptoms of anxiety. Lorazepam calms the nervous system, but it comes with real risks. Learn how it works, what it treats, and why dependence is a concern. Why is this medication prescribed? Lorazepam is used to relieve anxiety and treat insomnia. Lorazepam is in a class of medications called benzodiazepines. It works by slowing activity in the brain to allow for relaxation. Find patient medical information for Lorazepam (Ativan, Loreev XR) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Lorazepam belongs to a class of medications called benzodiazepines. It is thought that benzodiazepines work by enhancing the activity of certain neurotransmitters in the brain. Lorazepam is used in adults and children at least 12 years old to treat anxiety disorders. Lorazepam is a benzodiazepine that works in the brain to relieve symptoms of anxiety. Benzodiazepines are central nervous system (CNS) depressants, which are medicines that slow down the nervous system. This medicine is available only with your doctor's prescription. Lorazepam, sold under the brand name Ativan among others, is a medication of the benzodiazepine and depressant category. [15]. It inhibits activity of the central nervous system, and has anxiolytic and hypnotic effects. Find out how lorazepam treats anxiety and sleeping problems, and how to take it. NHS medicines information on lorazepam – what it's used for, side effects, dosage and who can take it. Lorazepam is a prescription anti-anxiety drug used to treat anxiety disorders and anxiety associated with depression; insomnia, panic attacks, and seizures. Common side effects are weakness, dizziness, unsteadiness, and headache. Ativan (lorazepam) belongs to a class of medications called benzodiazepines. It is thought that benzodiazepines work by enhancing the activity of certain neurotransmitters in the brain. Ativan is used in adults and children at least 12 years old to treat anxiety disorders.