Lorazepam calms the nervous system, but it comes with real risks. Learn how it works, what it treats, and why dependence is a concern. 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. Learn about the side effects of lorazepam, from common to rare, for consumers and healthcare professionals. 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 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 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 is in a class of medications called benzodiazepines. It works by slowing activity in the brain to allow for relaxation. How should this medicine be used? Lorazepam comes as a tablet, an extended-release capsule, and concentrate (liquid) to take by mouth with or without food. 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. 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 used for the short-term treatment of anxiety disorders or the temporary relief of anxiety symptoms associated with depression. Typical dosage: Most adults take 2 to 6 mg per day in.