Labor Lens presents information neutrally. Choices belong to you and your care team.
Tap any section heading to collapse it — hide the parts you don't need so the screen stays focused.
What is it
A blend of 50% nitrous oxide and 50% oxygen breathed through a mask the laboring person controls.
How your body works here
Inhaled 50/50 nitrous oxide + oxygen is absorbed through the lungs within seconds and washes out just as quickly when you stop breathing it. It works centrally by modulating pain perception (NMDA and opioid pathways) rather than blocking the nerve signal itself — so contractions still feel like contractions, but the edge is taken off. Self-administered timing lets you match peak effect to a contraction.
Benefits (B)
- Self-administered; you control when and how much.Review sources ↓
- Wears off quickly when you stop breathing it.Review sources ↓
- Does not numb you; you can still move.Review sources ↓
Risks (R)
- Lightheadedness, nausea for some.Review sources ↓
- May not provide enough relief for everyone.Review sources ↓
Alternatives (A)
- Epidural.Review sources ↓
- IV pain medications.Review sources ↓
- Non-medication comfort measures.Review sources ↓
Evidence summary
Used widely in many countries; considered safe for parent and baby in current research. Pain relief is modest compared to an epidural but offers more autonomy.
Sources
Tap a citation on any bullet above to open the source in a new tab.
Questions to ask your provider
- Is it available at my hospital?
- Can I use it alongside other comfort measures?
Intuition & Nothing/Wait (the I and N in BRAIN)
What is your gut telling you? What happens if you do nothing or wait?
Add to my birth plan
Tap a preference to save it to your plan. Your typed notes above are saved automatically.
This is a personal preference, not a decision. Final choices happen in conversation with your care team.
After you talk it through
Once you've discussed this with your care team, log the outcome — the decision, why you chose it, and the evidence you saw — in your private decision journal.
Log this decision →