Pain relief in labour: the options explained
Labour is different for every person, and so is the experience of pain. There is a wide range of options available to help manage it, from simple self-help techniques you can use at home to medically administered pain relief in hospital. No single approach is right for everyone; the best choice depends on your personal preferences, how your labour unfolds and what your particular unit offers. Understanding what is available before you go into labour means you can make informed decisions in the moment, rather than having to take them in under pressure.
Self-help approaches
Many people find that non-medical techniques provide meaningful comfort, particularly in the early stages of labour. Controlled breathing and relaxation methods can help you stay calm between contractions and manage the intensity as labour progresses. Changing position regularly and keeping mobile allows gravity to work in your favour and can ease the pressure of contractions. Some people practise hypnobirthing, a technique that combines breathing, visualisation and self-hypnosis to help reframe the experience of pain. Having a birth partner who provides massage or counter-pressure to the lower back is another widely used form of support that costs nothing and requires no equipment. These approaches are not a replacement for medical pain relief, but they are a valuable part of the toolkit and work well alongside other options.
Water: baths and birthing pools
Warm water is a remarkably effective way to ease labour pain, and it is available to many people either at home or in a midwifery-led unit. Immersing yourself in a warm bath or birthing pool during early labour can significantly reduce the intensity of contractions, encourage relaxation and help you feel in control of the experience. Some units also have pools available for labour in a consultant-led setting, though availability varies. It is worth checking with your midwifery team in advance whether a pool will be accessible when you arrive. One important limitation is that TENS machines cannot be used in water, so if you are planning to use both, you will need to use them at different stages of labour.
TENS (Transcutaneous Electrical Nerve Stimulation)
A TENS machine delivers small electrical impulses through pads attached to your back. These impulses work by interfering with the pain signals travelling to your brain and by encouraging your body to produce its own natural pain-relieving chemicals. TENS tends to be most effective during the earlier part of labour before contractions become very intense. One of its main advantages is that you can use it at home from the very start of labour, meaning you do not have to travel to hospital to begin managing pain. There is no known risk to the baby from TENS. You can hire or buy a machine before your due date so you have it ready to go. As noted above, TENS cannot be used in water, so you would need to remove the device before getting into a bath or pool.
Gas and air (Entonox)
Gas and air, known medically as Entonox, is a mixture of nitrous oxide and oxygen in equal parts. You inhale it through a mouthpiece or mask during a contraction. It acts quickly, taking the edge off pain without removing sensation entirely, and it wears off just as fast, which means you are in control of how much you use and when. Gas and air is available in all NHS birth settings and is a popular choice because it is straightforward to use and does not require any injection or procedure.
The main side effects to be aware of are dizziness and nausea, which some people find unpleasant enough to stop using it. It does not have any lasting effect on your baby. If you try it and find it unhelpful or uncomfortable, you can simply stop at any time and move on to another form of pain relief.
Opioid injections (pethidine and diamorphine)
Opioid-based injections provide stronger pain relief than gas and air and are given by a midwife into the thigh or buttock. The two drugs most commonly used in the UK are pethidine and diamorphine. They work over a longer period than gas and air and can be helpful if you need substantial pain relief but an epidural is not immediately available or not what you want.
The main drawback is drowsiness, which can affect your ability to stay present and active during labour. There is also a consideration for your baby: opioids can cross the placenta and temporarily make the baby drowsy, which can affect their breathing at birth. Because of this, the timing of the injection is planned carefully to allow the drug time to clear before delivery. If the birth happens within four hours of the injection, a reversal drug can be given to the baby to counteract the effect. An antihistamine is often given alongside the opioid to help manage nausea, as sickness is a common side effect.
Epidural
An epidural is the most effective form of pain relief available in labour. It involves a local anaesthetic being delivered into the epidural space in the spine by an anaesthetist. When it works well, it removes most or all pain from the lower half of the body while leaving you awake and alert. It can be topped up as needed throughout labour, and if you end up needing a caesarean section, the epidural can often be used for that procedure too.
Having an epidural requires an intravenous drip and a urinary catheter, as the anaesthetic affects bladder sensation. It may also slow down the second stage of labour, meaning the pushing phase may take longer. Some units offer a mobile or low-dose epidural, which provides pain relief while allowing more sensation and movement than a standard epidural. If a mobile epidural is something you are interested in, it is worth checking whether your unit offers it before your due date, as availability varies.
Spinal block
A spinal block is a single injection of anaesthetic given into the fluid surrounding the spinal cord. It works faster than an epidural and produces very effective pain relief and numbness in the lower body. Because it is a single injection rather than a continuous infusion, it does not last as long as an epidural. A spinal block is used mainly for planned caesarean sections rather than for ongoing labour pain management, though it can also be used in other specific situations at the discretion of the anaesthetic team.
Frequently asked questions
What is the most effective pain relief in labour?
An epidural is the most effective form of pain relief available in labour. It numbs the lower half of the body and can be topped up as needed. It does require a drip and catheter and may slow the second stage of labour, so it involves trade-offs worth discussing with your midwife.
Can I use a TENS machine at home in early labour?
Yes. TENS machines can be used at home from the start of labour and are particularly useful in early labour. They are not suitable for use in water. You can hire or buy a TENS machine before your due date so it is ready to use when labour begins.
Will pain medication affect my baby?
Gas and air leaves the body quickly and has no lasting effect on the baby. Opioid injections can temporarily affect the baby's breathing, which is why delivery is timed to give the drug time to clear. If birth happens within four hours of the injection, a reversal drug can be given to the baby. Epidurals are local anaesthetics that do not reach the baby in significant amounts.
What if I change my mind about pain relief during labour?
You can request additional pain relief at any point during labour, or decline options you had originally planned to use. Your birth plan states your preferences but it is not binding. Tell your midwife how you are feeling and what you need, and the team will support your decision.
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