What are the upsides and downsides of the Duragesic (fentanyl) patch?

Level pain relief. Good prolonged and level amount of pain relief for chronic conditions that have pain. Like any narcotic, addiction is possible. Building up a tolerance to narcotics also inherent to chronic narcotic exposure.
Duragesic (fentanyl) patch. Upsides- for chronic pain and gives you steady state levels that are not seen with short acting opiods. Downsides- very potent. Not helpful for acute pain. Often needs a rescue pain med as well.