Metnitazepyne, also known as N-Pyrrolidino metonitazene, is a synthetic opioid analgesic related to the benzimidazole family, similar to designer drugs such as metonitazene and etonitazepyne. Known for its high potency, Metnitazepyne exhibits strong opioid-like effects, comparable to fentanyl. It provides potent pain relief and can induce sedation and euphoria. However, its potency also presents risks, including respiratory depression, especially when tolerance develops and doses are escalated.