under a doctor's care.It blows my mind that fentayl is 50 to 100 times more powerful.How can that be?How in the world could Prince even stand up taking that stuff?My wife who is in the medical field says that stuff is usually only dispensed in patch form for terminal cancer patients with only the most painful forms of the disease like bone cancer and brain cancer.Morphine is as concentrated as you can get.How does this drug become 100x more powerful?