Comparison · Pregnancy Smart

Nitrous oxide vs epidural: how do labor options differ?

Assigned clinical reviewerMichael Yuzefovich· MD, FACOGDraft · pending clinical reviewUpdated September 18, 2026

How do the options compare?

Compare the degree of pain relief, how medicine is delivered, movement and monitoring needs, and whether another option can be used if your preferences change.

Approach	How it works	When it may fit	Tradeoff to discuss
Nitrous oxide	You hold a mask and inhale the supplied gas mixture.	May fit a preference for short-acting coping support.	Relief may be limited; nausea or dizziness can occur.
Epidural	Medicine runs through a catheter in the lower back.	Often fits a preference for stronger ongoing pain relief.	Placement takes time; monitoring and movement limits are needed.

With nitrous oxide, you inhale a gas-and-oxygen mixture through a mask. An epidural instead delivers medicine through a catheter near spinal nerves. The choice is about the experience and degree of relief you want, together with clinical suitability, rather than a test of how well you tolerate labor. 1
A review of labor nitrous oxide describes less pain relief than regional anesthesia but notes that control, coping, and mobility also shape satisfaction. The underlying studies differ and include observational surveys. Their results cannot predict whether you personally will prefer a mask or an epidural. 2
Epidural relief usually develops after assessment, placement, and medication administration. It can reduce leg sensation and strength and may lower blood pressure. Nitrous oxide has a shorter offset, but dizziness can still make standing inappropriate while using it. Ask the team about supported movement with either choice. 3
ACOG advises against combining inhaled nitrous oxide with systemic opioids or sedative medicines for labor because sedation and breathing risks can increase. Moving from one option to another requires coordination. Tell the team what pain or anxiety medicine you have already received. 4
An epidural may provide ongoing comfort through delivery and can sometimes be extended for an unplanned cesarean. Nitrous oxide does not provide surgical anesthesia. Discuss a backup plan, including access to anesthesia staff, even if you initially prefer a mask. 5

Which option makes sense?

Choose with your birth and anesthesia teams based on the relief you want, medical suitability, and what the facility offers. Nitrous oxide and an epidural meet different needs, and a change in preference during labor is a reasonable part of the plan.

Pregnancy Smart sells pregnancy supplements. This comparison concerns clinical care options to discuss with your birth team.

Frequently asked questions

Which option usually gives stronger pain relief?

An epidural generally provides more effective pain relief than nitrous oxide. Some people still value nitrous oxide for the sense of control or coping it offers, so pain scores are not the only consideration.

Can I try nitrous oxide and later request an epidural?

You can ask to change your pain-relief plan. The team will assess timing, other medicines, and clinical suitability. Availability and the time needed to place an epidural affect the transition.

Can I use laughing gas at the same time as an IV opioid?

ACOG does not recommend co-administration with systemic opioids or sedatives for labor. Let the anesthesia team coordinate the options rather than combining medicines independently.

Does nitrous oxide make contractions disappear?

It may make pain easier to cope with, but it does not create the same regional numbness as an epidural. Ask for another assessment if your current relief is inadequate.

Can my partner hold the mask on my face?

Labor nitrous oxide is designed for you to control the mask yourself. Ask staff to demonstrate the equipment and explain what to do if you become dizzy or sleepy.

Will I be able to walk after an epidural?

Do not assume so. Leg strength, sensation, blood pressure, and unit procedures determine your movement plan. Ask for help before getting out of bed.

Is nitrous oxide offered at every hospital?

No. Check the actual options at your planned birth facility during pregnancy. A birth preference written in advance cannot guarantee that a particular service will be available.

What if I decide I want a different option than my birth plan says?

Tell the team. Your preferences can change as labor changes, and the discussion should consider how you feel now. Ask what is currently feasible and how long the next option may take.

References

Medications for Pain Relief During Labor and Delivery
ACOG · https://www.acog.org/womens-health/faqs/medications-for-pain-relief-during-labor-and-delivery
Nitrous Oxide for Labor Analgesia: What We Know to Date
PubMed Central · https://pmc.ncbi.nlm.nih.gov/articles/PMC7755562/
Epidural block - pregnancy
MedlinePlus · https://medlineplus.gov/ency/patientinstructions/000484.htm
Use of Nitrous Oxide in Labor and Possible Interaction with Systemic Opioids or Sedatives/Hypnotics
ACOG · https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2021/07/use-of-nitrous-oxide-in-labor-and-possible-interaction-with-systemic-opioids-or-sedatives-hypnotics
Making Sense of Childbirth Pain Relief Options
ACOG · https://www.acog.org/womens-health/experts-and-stories/the-latest/making-sense-of-childbirth-pain-relief-options

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