Search for a NSN which is the Federal Supply Class (4 digits) + National Item Identification Number (9 digits). Use the Federal Supply Groups below to select one or multiple FSCs to search on. Note: If you know the NSN enter the first 4 digits in the FSC field and the remaining digits in the NIIN field below.
Lorazepam is the generic form of the brand-name drug Ativan, used to treat anxiety disorders and to relieve anxiety that's associated with depression.
Ativan In System. Ativan is a benzodiazepine and is also known under the generic name lorazepam. It has a blood half life of 10 - 20 hours. The effects of lorazepam should be largely gone after 24 to 36 hours. It may still be detectable for 7 - 10 days in trace doses though but it would not be exerting a pharmacological effect after 36 hours.