Roxie, I use to take elmiron orally but it caused some bad side effects so I instill it directly into my bladder along with marcaine and sodium bicarb. I try to do these treatments daily and they do help. However, I've gotten several bladder infections as a result of the instills and I wonder if the levaquin I've taken for the infections could have caused the neuropathy. I read on the levaquin site where neuropathy can be a rare side effect. I'm so glad the elmiron is helping you! I wish you the best of luck also!