Naloxone administration before sleep.
D000818:Animals; D006801:Humans; D009270:Naloxone / Q000008:administration & dosage*; D012890:Sleep / Q000187:drug effects*; D012894:Sleep Stages / Q000187:drug effects; D014667:Vasopressins / Q000097:blood
D014667:Vasopressins; D009270:Naloxone