根據handbook on injectable drugs的描述：
Stability：Intact vials of lorazepam should be refrigerated and protected from light and freezing. The manufacturer has stated that the product may be stored for up to two weeks at room temperature. However, in response to an inquiry, the manufacturer acknowledged that both physical and chemical stability are acceptable for up 60 days at room temperature. As with other parenteral products, lorazepam should be inspected visually for particulate matter and discoloration before use and should not be used if it is discolored or contains a precipitate.