I have been on a Fentanyl patch (75 mcg/h - change every 48 hours)for about 8 months now. It is by far the most effective pain medication I have had. Its not perfect ; however it helps me with taking deep breaths, sneezing and yawning. I am a diaphram breather and have brought my chest expansion back to 1 cm from having zero. It helps with most facets of my pain however its not perfect. Im at about a 8 pain lvl without the patch and a 4 with it.
As far as safety goes I cant really speak to that. Fentanyl could be deadly if abused. That said as long as you follow the Rx and avoid getting your body too hot, it can make a positive difference.
I take Fentanyl, Humira, arthrotec, and blood pressure pills.
Im on the NSD and have even starved myself for 6 week stretches and have had no results. By no results I mean Im still in pain, I have inflammation, bone marrow edema and MRI's that confirm this.