What category is Duragesic?

FENTANYL Transdermal System one (50 msg/h) system
In vivo delivery of 50 mcg/h fentanyl
for (72 hours) ONLY LASTS for 48 HOURS!!!
I was told by my neurologist that's how it affects some people.
The patch is created or packaged by Alvogen.
Last January 1 I received my patches in a white box, Alvogen is packaged in a yellow box, one patch caused an overdose. I don't remember the name on the white box.
Did my neurologist tell me accurately?

Narcotic analgesic.
Schedule 2
Has a high potential for abuse. Has a currently accepted medical use in treatment in the United States or a currently accepted medical use with severe restrictions. Abuse may lead to severe psychological or physical dependence.

Source: Drugs.com