Dad has mild dementia but most days, in the early afternoon he gets agitated and talks a mile a minute. The drug Lorazepam has been really helpful. It calms him down, and makes him want to lie down and rest. It often helps him sleep through most of the night. I need to find a medication that picks up when the Lorazepam does not work. Has anyone had experience with other medicines to help dementia patients calm down and sleep?