Laughing gas for labor

In Canada this is an option and the side effects are basically 3 side effects for mom. Nausea, I cant remember other 2 but same level of danger. 0 side effects for baby. No other pain relief has 0 side effects for baby. Its a 50/50 chance of working. With a 30 second wait to wear off if you want to try something else! Seriously please give it a try before your epidural. You can always have one later! I've been told by people who have had epidural with 1st baby that the laughing gas was just as good. What has your experience been with laughing gas?