The central nervous system effects, such as anesthesia and respiratory depression could have been reversed by an opioid antagonist such as naloxone, which is stocked by hospitals and most ambulances.
Kahjulikke mõjusid kesknärvisüsteemile nagu anesteesia ning respiratoorne depressioon, oleks suutnud kõrvaldada opioidide antagonist nagu Naloxone, millega on varustatud enamik haiglaid ja kiirabiautosid.