How long does 4 mg of lorazepam last after i take it for mri?

The effects of 4 mg of lorazepam can last anywhere from 6 to 12 hours, depending on individual metabolism and sensitivity to the medication. For an MRI, the peak effects are typically felt within 1 to 2 hours after taking it. However, some residual effects may linger for a longer period, so it's important to plan accordingly if you have activities afterward. Always consult with your healthcare provider for personalized advice.