I used it with both girls....with DD1 i think i 'abused' it alot more then with DD2.

I think i only got the true effects (ie way to much gas) once with DD2 and i was in the shower!

DD1 i wouldnt stop taking puffs and got very high on it by the end...

I think its the only option id be willing to use drug wise in any labour of mine.