Hi Melisana, I have pretty much been gluten free, no one is perfect, since the end of July and it has helped the horrible cramping I was having but no it hasn't helped the pain or any other fibro symptoms one bit.
I really didn't think I would be able to stay on a gluten free diet since they made up a great deal of what I was eating but when I seen a difference in the horrible cramping that was causing me to pass out or all most passing out it has been easier than I thought it would. There are a lot of gluten free products online and in some stores.
I don't know about the sensitivity to meds. I have tried a couple of pain relievers since being gluten free but they both caused side effects.
luv and hugs
Marlee