Ativan is a brand of lorazepam introduced by Wyeth and sold by Pfizer since 1977.
1977–1982[]

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1982–present[]

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| Predecessors Warner-Lambert (Parke-Davis) | Pharmacia & Upjohn (Pharmacia (G.D. Searle) | Upjohn) | Wyeth (American Home Products | A. H. Robins Company) Pharmaceuticals products Former brands and companies Divested Discontinued or defunct |
