Period cramps are caused by natural chemicals called prostaglandins, produced in the lining of your uterus. These chemicals make the uterine muscles and blood vessels contract to shed the lining, and prostaglandin levels are highest on the first day of your period, which is why day one usually hurts the most. As bleeding continues and the lining sheds, levels drop and the pain eases. The good news: several approaches, from heat to exercise to over-the-counter medication, can significantly reduce that pain.
Why Some Periods Hurt More Than Others
The amount of prostaglandins your body produces varies from person to person and even cycle to cycle. Higher levels mean stronger contractions, less blood flow to the uterine muscle, and more pain. This type of cramping, called primary dysmenorrhea, is the most common kind. It isn’t caused by any underlying disease. It typically starts within a year or two of your first period and may improve with age or after pregnancy.
Secondary dysmenorrhea is different. It’s caused by conditions like endometriosis, fibroids, or pelvic infections, and the pain pattern tends to change over time. If your cramps are progressively getting worse, lasting well beyond the first couple of days, or accompanied by pain during sex, urination, or bowel movements, those are signs worth investigating with a doctor. A family history of similar symptoms can also point toward endometriosis.
Anti-Inflammatory Pain Relievers
Over-the-counter anti-inflammatory medications work by blocking the enzymes that produce prostaglandins, which makes them especially effective for period pain. Ibuprofen and naproxen are the two most commonly used options. The key is timing: taking them before the pain peaks, ideally as soon as cramps begin or even slightly before your period starts, gives the medication time to lower prostaglandin production before contractions intensify.
Naproxen lasts longer per dose than ibuprofen. The NHS recommends starting with 500 mg, then 250 mg every six to eight hours as needed, with a maximum of 1,250 mg per day after the first day. Always take it with food to protect your stomach. For most people, one or two days of use is enough to get through the worst of it.
Heat Works as Well as Painkillers
Placing something warm on your lower abdomen or back relaxes the uterine muscle and increases blood flow, directly counteracting what prostaglandins do. Research comparing different pain relief methods found that heat was actually more effective than analgesics at reducing pain intensity. A hot water bottle, microwavable heat pad, or adhesive heat wrap all work. Wearable heat patches are especially practical because they deliver low, constant warmth for up to eight hours, meaning you can use them at work or school without interruption.
If you’re using a standard heating pad, place a cloth between it and your skin to avoid burns, and aim for a comfortably warm temperature rather than the highest setting. Combining heat with an anti-inflammatory can be more effective than either alone.
Exercise Reduces Pain More Than You’d Expect
Moving your body when you’re cramping sounds counterintuitive, but the evidence is strong. A review of nine randomized controlled trials found that regular exercise reduced menstrual pain intensity by roughly 25% on a standard pain scale. Both low-intensity options like yoga, stretching, and core work, and higher-intensity activities like aerobic training and dance fitness, produced significant improvements compared to no exercise at all.
The catch is consistency. Most studies showing clear benefits lasted 8 to 12 weeks, with participants exercising regularly throughout their cycle, not only during their period. Think of it as a long-term strategy rather than a quick fix on day one. That said, gentle movement during your period, like a walk or some stretching, can also help in the moment by increasing circulation and releasing endorphins.
TENS Units for Drug-Free Relief
A TENS (transcutaneous electrical nerve stimulation) unit sends mild electrical pulses through adhesive pads on your skin. These pulses interrupt pain signals traveling to your brain and may also trigger your body’s own pain-relief chemicals. Small, portable TENS devices designed for period pain are widely available without a prescription.
For menstrual cramps, a frequency of 80 to 100 Hz with a pulse width around 100 microseconds is typical. You want the intensity high enough to produce a strong buzzing or tingling sensation, but not painful. Electrode placement matters: you can place all four pads on your lower back, with the upper pair at roughly waist level and the lower pair near your tailbone. Alternatively, put two on your lower back and two on your lower abdomen directly over the area that hurts. Experiment with both configurations to see which gives you more relief.
Magnesium and Other Supplements
Magnesium helps muscles relax, which is why it shows up so often in conversations about cramps. Small clinical studies have used doses between 150 and 300 mg per day. Magnesium glycinate is the form most often recommended for cramps because it absorbs well and is gentler on your digestive system than magnesium citrate or oxide. One study found benefits from 250 mg of magnesium combined with 40 mg of vitamin B6. Starting at the lower end (around 150 mg) minimizes the chance of stomach upset.
Vitamin B1 (thiamine) has also shown promise. In one double-blind trial, adolescents who took 100 mg daily for three months experienced significant pain relief. Vitamin E, at 400 to 500 IU per day taken from two days before your expected period through the first three days of bleeding, reduced menstrual pain compared to placebo in two separate trials lasting two to four months. These aren’t instant solutions. Like exercise, supplements tend to work best when taken consistently over multiple cycles.
Hormonal Birth Control
Combined oral contraceptive pills reduce period pain by thinning the uterine lining, which means less tissue to shed and fewer prostaglandins produced. A Cochrane review of six studies found that the pill reduced pain by 0.7 to 1.3 points on a 6-point scale compared to placebo. In practical terms, women who had a 28% chance of improvement with placebo saw that jump to between 37% and 60% with the pill.
Hormonal IUDs, patches, and other hormonal methods can have similar effects. Some people on continuous hormonal contraception skip periods altogether, which eliminates menstrual cramps entirely. These options involve a conversation with your healthcare provider about side effects and personal health history, but for people with severe monthly pain that doesn’t respond well to other strategies, hormonal methods can be transformative.
Combining Approaches for the Best Results
Most people get the best relief by layering several strategies together. A practical plan might look like this: take an anti-inflammatory as soon as you feel cramps starting, apply heat to your lower abdomen or back, and stay gently active rather than staying in bed all day. In the background, a daily magnesium supplement and regular exercise throughout the month lower your baseline pain level over time.
If you’ve tried these approaches consistently for a few cycles and your pain still disrupts your daily life, that’s useful information. Pain that doesn’t respond to anti-inflammatories, heat, and lifestyle changes, or pain that’s getting worse over time, may point to something beyond typical cramping that deserves a closer look.