Commonly asked questions
What is nitrous oxide?
Nitrous oxide is a clear, odorless gas also known as “laughing gas.” It is mixed with oxygen and breathed in through a mask to help with labor pain.
How does it help with labor pain?
Nitrous oxide dulls the pain but does not get rid of it. It can lessen anxiety, make you feel relaxed, and help you feel more in control during contractions. It is often described as taking the "edge off" of labor.
How do I use it?
You give yourself nitrous oxide through a mask. Start breathing it about 30 seconds before a contraction starts. It should start working in 30 to 60 seconds. You can stop using it when it is not needed between contractions.
How will I feel when I am using nitrous oxide?
You might feel sleepy, dizzy, or a little silly while using nitrous oxide. Because you may feel shaky, someone should stay in the room while you are using it. These side effects go away quickly when you stop breathing the gas. You may be given medicine if you feel nausea. In rare cases, you might feel restless or confused.
Are there any serious side effects?
Some people have nausea or dizziness. If this happens, it should wear off soon. If a person becomes sleepy, they may not be able to hold the mask to their face.
When can I use nitrous oxide in labor?
You can use nitrous oxide at any point, such as during early labor and while giving birth. It can also be used for procedures like intravenous (IV) tube placement or repairs after birth.
Can I use nitrous oxide with other pain relief options?
Yes, nitrous oxide can be used with other methods like IV pain medicine or before getting an epidural.
Will it affect my baby?
Nitrous oxide is safe for both you and your baby. It does not change your ability to push and is not harmful to your baby.
If you get too sleepy, we may place a monitor to check your oxygen levels on your finger. Nitrous oxide does not affect your baby’s heart rate or how much oxygen is in their blood.
Can I walk or move around while using it?
For safety, you will need to sit or lay in bed while using nitrous oxide. It may make you feel shaky. After you stop using it, you can start walking or changing positions again in a few minutes.
Do I need to choose between using nitrous oxide or having an epidural?
No. Some people may use nitrous oxide before they have an epidural placed. They are not often used at the same time. You can choose to use nitrous oxide first and then switch to a different type of pain relief later in labor.
Who should not use nitrous oxide?
You may not want to use nitrous oxide if you:
- Have a vitamin B12 deficiency.
- Have certain lung or breathing disorders.
- Cannot hold the mask yourself.
Your provider will review your medical history to make sure it is safe for you.
Still have questions?
Please speak with your nurse, midwife, or provider. We are here to support your birth experience and help you explore all choices.