Butonitazene is an analgesic opioid of the benzimidazole opioid class, a designer variety of etonitazine analogs. Butonitazene is tens of times superior to morphine when administered intravenously, as was found in chemical studies in rodents. Butonitazene acts as a powerful analgesic, hypnotic, and sedative. Vomiting and respiratory depression may occur at high doses of Butonitazene. You can only buy Butonitazene online as a designer drug for chemical research.