https://www.smithsonianmag.com/smart-news/in-a-study-on-mice...
https://www.reddit.com/r/science/comments/1hyychf/scientists...
> The brain’s waste-removal process is “like turning on the dishwasher,” a neurologist says, but common sleep medications may harm it"
> The team then tested the impact of Zolpidem (a common sleep medication also known as Ambien or Zolpimist) on this system, and found that the norepinephrine waves during sleep decreased by 50 percent and fluid transport into the brain decreased by around 30 percent in zolpidem-treated mice. These results suggest that sleeping aids that impact norepinephrine production—which includes most sleeping aids—might harm the brain’s waste-removal system.