No, snorted. But Im sure IV too. When I had almost no tolerance, 1mg had me very very very high for close to 18 hours. Nods, itching, euphoria, the works. Its just when you have a tolerance, you dont get those effects. I dont even try to get those effects anymore either. This was when I was younger and still naive about what suboxone really should be used for (they were also my friends prescription, not my own.)
I may be wrong about the "stronger than fentanyl" claim, although Im pretty sure Im not, but regardless, its still one of the strongest opioids available for prescription.