I have never taken naproxen but my husband did. It was called naprosyn and he took it for inflammation of rheumatoid arthritis. It did help him.
Doctors say that fibromyalgia is not an inflammatory illness but I know ibuprofen has been a God-send to me and that is for inflammation. So, who knows? They just might find that inflammation is a problem.
I'm so glad you are getting relief! That's the bottom line, isn't it?
Here is a link about naprosyn from the Physician's Desk Reference.
I'm so glad that you are feeling better (and you don't have to have a root canal ). I hope you get a firm dx, and I'm happy that you've found something that helps with the pain.
I take a prescription NSAID (not naproxen, but similar) for sacroiliitis. It has been a God-send for me. Right now, I wouldn't be able to walk without it. The only side effect I have is an increase in reflux, but that is manageable.
Hugs - Austen
Sorry, I spoke too soon. But I agree with Sherrine; a root canal really isn't that bad, especially if it relieves some of the pain. I've had 6 of them, and it's really no worse than getting a crown done. I wish you luck and relief from pain.