This is a repeat I am sure but for those that do not use the search I thought I would pass this on.
I was put on Fentynal 25mcg/hr then after 4 months it was increased to 50 mcg/hr for the last six months. During that time I lost 40 pounds. Of which I could not afford to loose even 10. The doctor has reduced the dosage to 37mcg/hr and my appetite is coming back. It was a PA who prescribed and increased the Fentynal.
It is my understanding that fentynal is extremely dangerous so ask questions if they decide to put you on it.
The 50mcg/hr did help my pain greatly, however at the expense of my overall health. I am male 5'9" and now up to 138 lbs I used to weigh 175 and it was mostly muscle, at my lowest I was 135 a few weeks ago.