... wow. What a goddamn idiot. Those patches can contain up to 16.8 mg of fentanyl, and are designed to release the drug over 24-168 hour intervals. For reference, 25micrograms (i.e. 0.025 milligrams) is a good starting dose for someone who is relatively opiate naive and in serious pain.
This article popped up in my AMA newswire today. US Opiate Deaths at an All Time High.