opioid research-chemical habit-forming tentative depressant
A rare opioid and fentanyl analogue (not to be confused with acetyl-fentanyl), this drug is a powerful and potent analgesic. Little reliable information exists, even for basic usage such as dosage. Exercise extreme caution. Overdose may result in respiratory depression. Do not mix with depressants or stimulants. Potentially neurotoxic and carcinogenic.