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Ativan, the brand name for lorazepam, is a potent benzodiazepine medication used to treat anxiety, insomnia, and certain seizure disorders. Enhancing the effects of GABA, a neurotransmitter inhibiting brain activity, induces a calming and soothing effect. Ativan can be administered orally or intravenously, with a rapid onset of action. These are available in 1mg and 2mg.