I've had an epidural but it was done under sedation because of my age and also because I was having another procedure at the same time. I obviously can't remember anything about what the procedure entailed but it was done with Ketamine.
I got 6 hours reduction in pain (my pain levels went from an 8 and half to a 5 - not as much as i'd hoped for but I was really happy to have less pain!) It soon returned unfortunately but I am now on oral Ketamine and that does help a little (doc wont do any more epidurals as says can cause more harm than good).
I hope it helps should you go ahead
Alison