Hi Friend ..
Thanks for using Health Care Magic..
I read your query and it seems you are alleric to morphine
and too stopped taking demerol
made you worse with pain.
I suggest you to get prescribed for Percocet 10 mg for pain relief as alternative choice of morphine .
Percocet is an opiod
anelgesic will help you to overcome back pain
Wishing you to have a healthy life without pain .