Ibuprofen, paracetamol, naproxen or heat? We compare period pain relief options in Australia, why NSAIDs usually beat paracetamol for cramps, and the red flags.

Period pain (medically called dysmenorrhoea) is one of the most common reasons people reach for the pharmacy shelf. For many, it is a few hours of dull cramping; for others, it is days of pain that disrupts work, study and sleep. The good news is that the right over-the-counter (OTC) choice, taken at the right time, can make a real difference. The catch is that not all painkillers work equally well for cramps — and the timing matters as much as the tablet. This guide explains your options in plain English, why some work better than others, and when period pain is a sign to see your GP.
During your period, the lining of the uterus (womb) releases hormone-like chemicals called prostaglandins. These trigger the muscular wall of the uterus to contract so the lining can shed. Higher prostaglandin levels mean stronger, more painful contractions — and they can also temporarily reduce blood flow to the uterus, which adds to the cramping ache. Prostaglandins are also why some people get accompanying symptoms like nausea, loose bowels, headache or fatigue around their period.
This is the key to understanding why your choice of medicine matters. Because prostaglandins sit at the centre of the problem, a medicine that lowers prostaglandin production tackles the cause of the cramps, not just the pain signal. That is exactly what NSAIDs do.
NSAIDs (non-steroidal anti-inflammatory drugs) include ibuprofen (Nurofen, Advil, and many generics), naproxen (Naprogesic and generics) and aspirin. They work by blocking the COX enzymes that produce prostaglandins. By reducing prostaglandin levels, NSAIDs may help ease the contractions that cause cramps — which is why they are usually considered the first-line OTC option for primary period pain.
Paracetamol (Panadol, Panamax, Herron and generics) works differently. It reduces how the brain perceives pain and lowers fever, but it has essentially no anti-inflammatory effect and does not meaningfully reduce prostaglandins. It may take the edge off the pain, but it does not address the inflammatory driver of cramps. For most people, that makes it the weaker option for period pain — though it remains a sensible alternative for those who cannot take NSAIDs.
How well an NSAID works for period pain often comes down to when you start it. Once prostaglandins have been released and cramps are in full swing, you are playing catch-up. Taking an anti-inflammatory early — at the very first sign of cramping, or when you know your period is about to start — may keep the pain more manageable than waiting until it peaks.
For typical primary period pain, an NSAID is the option most likely to help because it targets the prostaglandins behind your cramps. Ibuprofen is the most widely available and a sensible starting point for many people.
Some people can't take NSAIDs — for example, those with asthma that is sensitive to anti-inflammatories, a history of stomach ulcers or bleeding, certain kidney or heart conditions, or who are pregnant. If an NSAID isn't suitable for you, paracetamol may help ease the pain instead. It is gentler on the stomach and suits more people, but remember it works on the pain signal rather than the inflammation, so it is generally the weaker choice for cramps. Your pharmacist can help you decide what's appropriate.
| Option | How it may help | Best for | Cautions |
|---|---|---|---|
Ibuprofen (NSAID) | Reduces prostaglandins that drive cramps | First-line for most primary period pain | Take with food; avoid with asthma/ulcers/kidney issues; not in pregnancy |
Naproxen (NSAID) | Reduces prostaglandins; longer-lasting relief | All-day or overnight cover with fewer doses | Same NSAID cautions; don't combine with other NSAIDs |
Paracetamol | Eases pain perception (no anti-inflammatory action) | When NSAIDs aren't suitable | Stay under 4g/day; watch hidden paracetamol in combo products |
Heat pack / heat patch | Relaxes the uterine muscle and soothes cramping | Drug-free relief, alone or alongside medicine | Avoid burns; don't apply directly to bare skin for long periods |
TENS machine | Mild electrical pulses may interrupt pain signals | People wanting a non-medicine option at home | Follow device instructions; not for use over the abdomen in pregnancy |
Gentle exercise | Boosts circulation and releases endorphins | Mild-to-moderate cramps and ongoing prevention | Listen to your body; rest if pain is severe |
Magnesium (supplement) | Limited evidence it may ease cramps for some | Those wanting to trial a supplement | Evidence is limited; can cause loose stools; check interactions |
Medicine isn't the only tool. Several drug-free measures may ease period pain on their own or alongside an NSAID or paracetamol. They are especially useful if you'd rather minimise how much medicine you take.
Primary dysmenorrhoea is common period pain with no underlying disease — it usually starts a year or two after periods begin, tends to come with the bleed, and often responds well to NSAIDs and self-care. Secondary dysmenorrhoea is pain caused by an underlying condition such as endometriosis, fibroids or pelvic inflammatory disease. It may begin later in life, get worse over time, last longer than the period itself, or come with other symptoms. If your pain fits the secondary pattern, OTC relief is not enough on its own — a GP can investigate the cause and discuss options.
For fast relief, many people find an NSAID such as ibuprofen taken at the first sign of cramps, combined with a heat pack on the lower abdomen, works well. Take ibuprofen with food and follow the label. If NSAIDs don't suit you, paracetamol with heat is a reasonable alternative. Gentle movement can also help.
For most people with primary period pain, ibuprofen (an NSAID) is generally more effective because it reduces the prostaglandins that drive cramps. Paracetamol eases pain but not the underlying inflammation, so it tends to be weaker for cramps. If you can't take NSAIDs, paracetamol may help — ask your pharmacist.
Non-medicine measures that may help include heat (heat packs or patches), a TENS device, gentle exercise such as walking or yoga, rest and hydration. Some people trial a magnesium supplement, though the evidence is limited. These can be used on their own or alongside OTC pain relief.
Higher prostaglandin levels generally mean stronger uterine contractions and more pain, which is normal variation for many people. But cramps that are progressively worsening, last longer than your period, or come with heavy bleeding, pain during sex or bowel symptoms may point to an underlying condition such as endometriosis. If that sounds like you, see your GP.
There's no magic food, but a balanced diet with plenty of fruit, vegetables, wholegrains and water supports general wellbeing around your period. Some people find foods rich in magnesium and omega-3s, and limiting very salty or heavily processed foods, helps them feel better — though individual responses vary and evidence is limited.
Warm drinks such as ginger or chamomile tea, or simply staying well hydrated with water, can be soothing for some people. A warm drink paired with a heat pack is a comforting drug-free combination. These are comfort measures rather than proven treatments, so they work best alongside the options above if needed.
This information is general in nature and isn’t a substitute for professional medical advice. Always read the label and follow the directions for use. Talk to your pharmacist or doctor about what’s right for you.

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