Entonox, often called “gas and air,” is a form of pain relief commonly used during labour in Aotearoa New Zealand and internationally. It is a mixture of oxygen and nitrous oxide that you breathe in through a mouthpiece as contractions begin. Entonox works quickly and wears off quickly, and many hospitals and birth units have it readily available. People choose to use it in different ways during labour, depending on what feels helpful to them. Please watch the video below to learn more about how Entonox works and whether it might be an option you would like to consider.