Reproductive health
Medicines for Period pain
Cramping lower-tummy pain around the time of a period, driven largely by natural chemicals called prostaglandins, and usually eased well with anti-inflammatory pain relief, self-care or hormonal options.
Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.
Quick answer
What is Period pain?
Period pain, or dysmenorrhoea, is the cramping, aching pain in the lower tummy that many people feel before or during a period, sometimes spreading to the back and thighs and occasionally coming with nausea, tiredness or loose stools. It happens because the womb muscle contracts to shed its lining, and natural chemicals called prostaglandins make those contractions stronger and reduce blood flow, which is felt as cramp.
- How it is treated: The aim is to ease the pain effectively while making sure nothing more serious is being missed.
- Self-care: A heat pad or warm bath over the lower tummy, gentle regular exercise, and stopping smoking can all help reduce the severity of period cramps.
- When to seek help: See your GP or pharmacist if period pain is severe, new or getting worse, not controlled by usual pain relief, or comes with abnormal bleeding, bleeding between periods or after sex.
What it is
Period pain, or dysmenorrhoea, is the cramping, aching pain in the lower tummy that many people feel before or during a period, sometimes spreading to the back and thighs and occasionally coming with nausea, tiredness or loose stools. It happens because the womb muscle contracts to shed its lining, and natural chemicals called prostaglandins make those contractions stronger and reduce blood flow, which is felt as cramp. For most people this is "primary" period pain — uncomfortable but not a sign of any underlying problem — and it often eases over the years and after having children. Sometimes period pain is "secondary", caused by an underlying condition such as endometriosis, fibroids, adenomyosis or pelvic infection; this is more likely when the pain is new, changing, severe, comes with abnormal bleeding, or starts well into adult life, and it needs to be looked into rather than simply managed as routine cramps.
How it is treated
The aim is to ease the pain effectively while making sure nothing more serious is being missed. Because prostaglandins drive the cramps, anti-inflammatory painkillers (NSAIDs) such as ibuprofen are usually the most effective first choice, as they reduce prostaglandin production at the source; starting them as the period begins, or just before, tends to work best. Paracetamol is a reasonable alternative or add-on for people who cannot take an NSAID, though it is generally a little less effective for this kind of pain. Where period pain is troublesome month after month, or contraception is also wanted, hormonal options such as the combined pill can thin the lining and settle the cramps over time. Simple self-care measures sit alongside these and help in their own right. If pain is severe, not controlled by these steps, or there are features suggesting a secondary cause, the focus shifts to investigation and, where needed, treating the underlying condition.
For this condition, these medicines
Medicine classes used for Period pain
Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.
Symptom checker
Symptoms that can point to Period pain
Period pain can be one cause of these symptoms. Each guide explains the other possible causes and the red-flag warning signs that mean you should get urgent help:
Beyond medication
Lifestyle and self-care
A heat pad or warm bath over the lower tummy, gentle regular exercise, and stopping smoking can all help reduce the severity of period cramps.
When to get help
When to see a doctor
See your GP or pharmacist if period pain is severe, new or getting worse, not controlled by usual pain relief, or comes with abnormal bleeding, bleeding between periods or after sex. Seek urgent help if pain is severe with fever, or if there is any chance you could be pregnant, as this needs prompt assessment.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Period pain: frequently asked questions
What medicines are used for period pain?
The mainstays are anti-inflammatory painkillers (NSAIDs) such as ibuprofen, which work at the source by reducing the prostaglandins that cause the cramps and are usually the most effective option. Paracetamol is a reasonable alternative or add-on for people who cannot take an NSAID. Where pain is troublesome every month, hormonal options such as the combined pill can settle it over time. The right choice depends on how severe the pain is, what else you take and whether you also want contraception.
When should I take painkillers for the best effect?
For period pain, anti-inflammatory painkillers tend to work best when started as the period begins, or even just before if you can predict it, rather than waiting until the cramps are at their worst. Taking them regularly through the most painful day or two, if you can take them, usually gives steadier relief than occasional doses once the pain has built up.
Could my period pain be a sign of something more serious?
Most period pain is normal and not a sign of any underlying problem. But pain that is new, severe, getting worse, or that comes with abnormal or heavy bleeding, bleeding between periods, or pain during sex can point to a secondary cause such as endometriosis or fibroids. If your pain fits any of these patterns, it is worth getting it checked rather than just managing it as routine cramps.
Will hormonal contraception help my period pain?
Often, yes. Hormonal methods such as the combined pill thin the lining of the womb and reduce the prostaglandins that drive the cramps, so many people find their period pain becomes much lighter and easier over time. It can be a good option if you also want contraception, and your GP or pharmacist can talk through whether it suits you and your medical history.
Sources
Where this is drawn from
- NICE CKS: Dysmenorrhoea.
- NICE CKS: Period pain.
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