Period cramps happen when your uterus contracts to shed its lining, and the intensity of that pain is directly tied to how much of a chemical called prostaglandin your body produces. Higher prostaglandin levels mean stronger contractions, more inflammation, and worse pain. The good news: several proven strategies can lower prostaglandin activity or block the pain signals it creates, from over-the-counter painkillers to heat therapy to longer-term lifestyle changes.
Why Period Cramps Hurt So Much
Prostaglandins are the key players. Your uterine lining releases these hormone-like compounds to trigger the muscle contractions that push tissue out during your period. But prostaglandins also activate your body’s inflammatory response, causing blood vessels to leak fluid into surrounding tissue. That combination of intense muscle squeezing and local inflammation is what produces cramping pain. When your body overproduces prostaglandins, the contractions become stronger, blood flow to the uterus temporarily decreases, and pain sensitivity increases.
Take Anti-Inflammatory Painkillers Early
NSAIDs like ibuprofen and naproxen work by directly blocking prostaglandin production, which makes them more effective for cramps than general painkillers like acetaminophen. The key detail most people miss: they work best when you take them before the pain gets bad. Starting one to two days before your period begins, or at the very first sign of bleeding, gives the medication time to suppress prostaglandin levels before they peak.
For ibuprofen, a standard over-the-counter dose is 200 to 400 mg every four to six hours, up to 1,200 mg in 24 hours. Naproxen sodium works with a starting dose of 220 to 440 mg, then 220 mg every 12 hours. Once you’re already deep into the pain, these medications still help, but they’re playing catch-up rather than preventing the cascade. Take them with food to protect your stomach, and keep on a regular schedule for the first two to three days of your period rather than waiting for each wave of pain to return.
Heat Therapy Works as Well as Painkillers
Applying heat to your lower abdomen or back isn’t just comforting. A 2025 systematic review of 22 randomized trials found that heat therapy provided comparable or slightly better pain relief than NSAIDs after three months of use. Even within the first 24 hours, heat matched NSAID performance. The safety advantage was striking: people using heat were 70% less likely to experience side effects compared to those taking anti-inflammatory medication.
A heating pad, hot water bottle, or adhesive heat wrap set around 40°C (104°F) placed on your lower belly is the simplest approach. Wearable heat patches that stick under your clothes let you keep moving throughout the day. You can also combine heat with painkillers for especially rough days, since they work through different mechanisms.
Exercise Reduces Cramps Over Time
Exercise is one of the most effective long-term strategies for period pain, though it requires consistency. A large meta-analysis found that working out at least three times per week, for sessions longer than 30 minutes, over a minimum of eight weeks significantly reduced menstrual pain scores. The target is at least 90 minutes of total exercise per week.
Strength training ranked highest among exercise types for pain reduction, followed by aerobic exercise, relaxation exercises, and stretching. You don’t need to exercise during your period specifically (though some people find it helps in the moment). The benefit comes from the cumulative effect of regular physical activity on inflammation and pain processing. If cramps currently keep you sedentary during your period, starting with lighter activity like walking or yoga and building up over two months is a reasonable approach.
TENS Units for Drug-Free Relief
A TENS (transcutaneous electrical nerve stimulation) unit sends small electrical pulses through adhesive pads on your skin, interrupting pain signals before they reach your brain. These portable, battery-powered devices are available without a prescription and cost between $20 and $50.
For period pain, 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 sensation that isn’t painful. Place the electrode pads in one of two configurations: all four pads on your lower back (two higher up around waist level, two lower near the top of your hips), or two on your lower back and two on your lower abdomen over the area where you feel the most pain. You can wear a TENS unit under your clothes and use it throughout the day.
Dietary Changes That Lower Prostaglandins
Because prostaglandins drive both the contractions and the inflammation behind cramps, what you eat in the weeks leading up to your period can make a measurable difference.
Omega-3 fatty acids, found in fatty fish, walnuts, and flaxseed, have the strongest evidence. Research shows that diets high in omega-3s (including supplements of 300 to 1,800 mg per day) over two to three months can reduce both pain intensity and the amount of pain medication needed. Omega-3s compete with the fatty acids your body uses to manufacture prostaglandins, effectively dialing down production.
Vitamin D also appears to reduce the uterine inflammation that prostaglandins cause. A 2023 meta-analysis found that women who took higher weekly doses of vitamin D experienced significant relief from period pain. Vitamin E has shown benefits too: in a well-conducted trial, taking 90 mg twice daily for five days (starting two days before the expected period) significantly reduced both the severity and duration of cramps. Ginger, at doses of 750 to 2,000 mg per day during the first three to four days of your period, has also performed well in multiple clinical trials for pain reduction.
Hormonal Birth Control for Severe Cramps
If lifestyle measures and over-the-counter options aren’t enough, hormonal contraceptives can dramatically reduce cramp severity by thinning the uterine lining. A thinner lining means less tissue to shed, fewer prostaglandins released, and weaker contractions. The pill, patch, ring, implant, injection, and hormonal IUD all have evidence supporting their use for painful periods. Continuous-use pills that let you skip the placebo week can eliminate monthly bleeding and cramping altogether for some people.
When Cramps Signal Something Else
Most period cramps are “primary dysmenorrhea,” meaning the pain comes from normal uterine contractions without any underlying disease. But certain patterns suggest something more is going on. Pain that gets progressively worse over time, cramps that don’t respond to NSAIDs, heavy or irregular bleeding, pain during sex, or bleeding between periods can all point to conditions like endometriosis, adenomyosis, fibroids, or pelvic inflammatory disease.
Cramps that start later in life after years of pain-free periods are also worth investigating. With primary dysmenorrhea, pain typically begins within a year or two of your first period and follows a predictable pattern. If the character, timing, or intensity of your pain changes significantly, that shift is worth bringing up with a healthcare provider, since conditions like endometriosis are treatable but often go undiagnosed for years.