"i have tried several pain medications over the years for chronic abdominal pain. i&#039;ve had multiple surgeries which caused nerve damage and scar tissue in my abdomen. the most recent medicines i tried were opana er 30mg 2x&#039;s daily and percocet 10mg 3x&#039;s daily for breakthrough pain. my doctor prescribed methadone 5mg 3x&#039;s daily just to try something different. i was still having breakthrough pain, so he added nucynta 50mg 4 times daily for that. i have to admit, i was a skeptic. i am now a believer! this medication has worked wonders for me! i have been taking it for just over one month now, and aside from the sleepy feeling, there really have been no other side effects for me. i have energy that i never thought i could have again. i love this medicine."