Reading things about Fentanyl on the internet, and this drug must of been amazing, lawsuits, addictions, cases, I'm hooked, I'm going to continue into researching this thing. I can already tell this would be highly unrecommended as a beginner dose, the only way you can get this is if you have already taken opioids or narcotics for atleast a week. So far the effects are dizzyness or drowsyness, dry mouth, changes in vision, hallucinations, problems with balancing, talking, and walking, blurred vision, confusion, allergic reactions, constipation, irregular heart beat, nausea, sweating, and weakness. A few fun facts It's 100x times more powerful than morphine and In military applications, fentanyl and, possibly, derivatives can be used to very rapidly incapacitate and to kill. That is always a good sign.
(updated) It apparently has a weaker euphoric effect than heroin, but has a much stronger analgesic effect.
Happy Dosing - SpaceMiNd