Sulindac Questions

Which is better, sulindac or ibuprofen ? I hurt my lower back , might just be a bad pull or strain?

Does Lisinopril, Asacol or Sulindac contain any gluten?

I am asking due to a celiac disease. It is important that we know if there is a presence of gluten. Our pharmacy doesn't seem to know or maybe they don't have the time/desire to find out!.

Sulindac - is this drug used for pain like vicodin at night when going to bed?

I use vicodin or vicoibprofen at night for pain and asked my doctor about sulindac. He was explaining it is used for arthuritis. Will it work the same as my vicodin, to help the pain and sleep?