How quickly does lorazepam work? Lorazepam tablets and liquid start to work inaround 20 to 30 minutes. It reaches full sedating effect after 1 to 1.5 hours and lasts for around 6 to 8 hours. A lorazepam injection works much faster but also lasts around 6 to 8 hours. What can you not ...
Call your doctor immediately if you have signs of liver toxicity like fever, joint pain, bleeding, skin rash or itch, appetite loss, fatigue, nausea/vomiting, stomach pain, dark colored urine, light colored stools, and/or yellowing of the skin / eyes. ...