Yes it does have a small amount of RL. There are mixed opinions on RL. I personally have had no problem with RL and have used it throughout my last pregnancy with no problems. I did have a 6 hour and very uneventful labor.
I am so jealous of your 6 hour labor! I went 31 hours of active labor, had my heart start to fail around hour 18 because I kept refusing any pain medication (they compared what happened to me to being tortured to death) and ended up with a csection. Looking back on it, my doctor really gave me every possible chance of a natural birth, so I can't complain.