Period cramps happen because your uterus contracts to shed its lining, and those contractions are driven by hormone-like chemicals called prostaglandins. The more prostaglandins your body produces, the stronger the contractions and the worse the pain. That’s the core mechanism, and nearly every effective strategy for stopping cramps works by either reducing prostaglandin levels, relaxing the uterine muscle, or both.
Take Anti-Inflammatory Pain Relief Early
Over-the-counter anti-inflammatory medications like ibuprofen and naproxen are the most reliable way to reduce cramps because they directly block prostaglandin production. The key is timing: start taking them as soon as your period begins, or ideally the day before if you can predict it. Waiting until cramps are already intense means prostaglandins have already built up, and the medication has to work against a head start.
For ibuprofen, a standard approach is 400 mg (two tablets) three times a day with food, for about three days. The first dose can be slightly higher, around 600 mg, if you weigh over 100 pounds. For naproxen, one 220 mg tablet every eight hours works for most people, with a double dose (440 mg) to start. Both should be taken with food to protect your stomach. If one doesn’t work well for you, try the other. People respond differently to each.
Use Heat Directly on Your Abdomen
A heating pad or hot water bottle placed on your lower belly relaxes the uterine muscle and increases blood flow to the area, which helps ease the squeezing sensation of cramps. Heat works surprisingly well for something so simple. In some studies, it performs comparably to ibuprofen for mild to moderate pain. You can also combine the two: take an anti-inflammatory and apply heat while waiting for it to kick in. Stick with a temperature that’s comfortably warm, not scalding, and use a cloth barrier if needed to avoid skin irritation.
Try a TENS Machine
A TENS (transcutaneous electrical nerve stimulation) unit sends mild electrical pulses through sticky electrode pads on your skin, which interrupts pain signals traveling to your brain. It’s portable, drug-free, and you can use it while going about your day.
For period cramps, set the frequency between 80 and 100 Hz with a pulse width around 100 microseconds. Turn the intensity up until you feel a strong buzzing or tingling, but it shouldn’t hurt. If your unit has four electrode pads, place all four on your lower back: two higher up (roughly at waist level) and two lower (near the top of your buttocks). This covers the nerve pathways that supply the uterus and surrounding area. Alternatively, put two pads on your lower back and two on your lower abdomen over the area that hurts most.
Exercise, Even When You Don’t Want To
Moving your body during your period feels counterintuitive, but exercise is one of the most consistently supported ways to reduce cramp severity. A review of nine randomized trials found that both low-intensity exercise (yoga, stretching, core work) and high-intensity exercise (aerobic training, dance-based workouts) significantly improved menstrual pain compared to doing nothing. The studies lasted eight to twelve weeks, meaning the benefit builds over time with regular activity rather than acting as an instant fix during a single cycle.
No specific type of exercise appears clearly better than another, so pick whatever you’ll actually do. A 30-minute walk, a yoga flow, a swim, a strength session. Consistency across multiple cycles matters more than intensity on any given day. If cramps are at their worst, gentle stretching or a slow walk is a perfectly good starting point.
Supplements That May Help
A few supplements have modest evidence behind them for reducing menstrual pain, though they take time to work and won’t replace anti-inflammatories for severe cramps.
- Magnesium: Three small trials found that magnesium supplements decreased menstrual pain compared to a placebo. A daily dose of 300 to 600 mg is a reasonable range. Forms like magnesium glycinate or gluconate are less likely to cause digestive issues than magnesium oxide.
- Vitamin B1 (thiamine): A dose of 100 mg daily improved menstrual pain in one study, but only after at least 30 days of consistent use. This isn’t a take-it-when-cramps-hit remedy. You’d need to supplement daily for one to three months to see whether it makes a difference for you.
Both are inexpensive and low-risk for most people, so they’re worth trying alongside other strategies. Just don’t expect overnight results.
Hormonal Birth Control as a Long-Term Option
If cramps consistently disrupt your life despite over-the-counter treatments, hormonal birth control is one of the most effective options available. It works by thinning the uterine lining, which means less tissue to shed and fewer prostaglandins released during your period. The result is lighter, shorter periods with significantly less pain.
Combined oral contraceptive pills are the most commonly used option for this purpose. Hormonal IUDs also work well: one large observational study found that the prevalence of painful periods dropped from 60% before insertion to 29% after three years of use. Injectable hormonal contraceptives take a different approach entirely. Most people using them stop getting periods altogether within the first year, which eliminates cramps along with the bleeding. Each option has trade-offs in terms of side effects, convenience, and how quickly they’re reversible, so the right choice depends on your broader health picture and preferences.
Signs Your Cramps Need Medical Attention
Most period cramps are what’s called primary dysmenorrhea, meaning the pain comes from normal uterine contractions with no underlying disease. But cramps that are new, worsening, or don’t respond to standard treatments can signal something else. Secondary dysmenorrhea is pain caused by a physical condition like endometriosis, uterine fibroids, adenomyosis, pelvic inflammatory disease, or polyps in the pelvic cavity. This type tends to show up later in life, often after years of relatively manageable periods, though endometriosis can start in the teen years.
Pay attention if your cramps have gotten progressively worse over time, if pain continues outside your period, if you have very heavy bleeding with large clots, or if over-the-counter anti-inflammatories that used to work no longer help. Pain during sex, painful bowel movements during your period, or difficulty getting pregnant alongside severe cramps are also worth bringing up with a provider. These patterns don’t automatically mean something is wrong, but they’re the kind of details that help distinguish normal cramping from a condition that benefits from specific treatment.