I used the gas only and other worked wonders. It only works while you breath it in and I only had it from 9 cm until I was ready to push and birth was amazing! Painful but amazing.
scoliosis. But I got it anyways at last call. I was 16 at that time. It worked amazingly. You won't be able to get up for awhile until it wears off which is annoying. But as far as pain it worked great!
If you mean for the labor/birth I got the epidural even though I wasn't going to because I have