Nitrous oxide is a gas that is sometimes used during childbirth to help relieve pain. It won't put you to sleep. It may be used with other pain relief options.
You'll get a mouthpiece or mask to breath in the nitrous oxide when you need it. You should feel the effects soon after taking it. Because it can take almost a minute to start working, you'll want to use it before you feel a contraction. The effects will go away soon after you stop the nitrous.
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