title: Failure of naloxone to affect human sleep.
mesh_terms: D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004723:Endorphins / Q000502:physiology*; D006801:Humans; D008297:Male; D009270:Naloxone / Q000494:pharmacology*; D012890:Sleep / Q000187:drug effects* / Q000502:physiology; D012894:Sleep Stages / Q000187:drug effects
chemical_list: D004723:Endorphins; D009270:Naloxone