Anyone who wants to talk about the most potent opioid know to man is naive. A vial of Carfentanil Citrate has a drug that is 5000 times as powerful as pure heroin (diacetylmorphine). The government is so damn paranoid about Carfentanil that it is actually a secretive agent used to immoblize people in warfare. Carfentanil is far more powerful than Vx nerve gas for fuck sakes. Although A vial only costs veterinarians $650 a piece, the government has a special list called the "Carfentanil approved user list". Very few veterinariens are certified to even have acces to the chemical. In russia a tiny amount of Carfentanil was vaporized and killed many terrorists even with Narcan to save them. Carfentanil is so poisonous that although 1 gram could produce 20 pounds of pure heroin, the drug could not be evenly distributed among the cutting powder and it would most certainly kill you. [EDITED- While I appreciate your concern, the OP has a right to ask his question, please don't start trouble]
-Pdx