Off-label use for Naloxone to reverse non-opioid overdose has been substantiated at the case series/report level for which xenobiotics?
Valproic acid (PMID=17711961; theoretical mechanism: empiric evidence, no theory)
Ace-inhibitor overdose (PMID=1928887; theoretical mechanism: inhibition of digestion of endogenous endorphins)
Imidazolines (PMDI=29544366; higher dose, theoretical mechanism: reversal of brain stem Beta-endorphin release)