M-50
TensCare OVA Therma Belt
NGB521
Slimpal
The best device for menstrual pain
Cramps, dizziness, weakness, vomiting… Menstrual pain or dysmenorrhea affects many women every month and can be disabling. In fact, a study led by a research team headed by Sara Sánchez-López from the Institute of Innovation and Knowledge Management (INGENIO), in collaboration with researchers from the Polytechnic University of Valencia and the University of Western Australia, involving 3,490 Spanish women found that 70.9% suffer menstrual discomfort every month or almost every month.
They also highlighted that one in five women with frequent discomfort had never received gynecological care, suggesting these problems remain underdiagnosed. And although many women choose to take painkillers to try to reduce discomfort, there are other options, such as devices for menstrual pain that help reduce pain through small microcurrents and a heat system, like those provided by heat pads. In this comparison, we have tested several of them.
How we chose and tested the products
For a couple of months, I have been testing the models participating in this comparison. Although I no longer usually have very painful periods since taking the contraceptive pill, I do feel discomfort in the lower abdomen during some. Therefore, I have used these devices to relieve menstrual pain to see if they helped soothe those characteristic cramps of dysmenorrhea. Additionally, I had the help of a friend who usually suffers very painful periods, who gave me her opinion on the models. When analyzing and evaluating them, I considered the following aspects:
- Ergonomics: the comfort of using the device during the session.
- Massage quality: does it relieve pain? Are the electrical impulses pleasant or too strong?
- Power: how long the battery lasts and the level of electrical discharges.
- User experience: ease of use, how they adapt to the body, if they relieve pain, how long it is recommended to use them…
Why you can trust me
I am a journalist specialized in technology and, in recent years, I have focused on product analysis and creating comparisons, testing devices and articles of all kinds for home and personal care. In each, I analyze products under real conditions, reviewing their features, advantages, and possible limitations to offer clear and useful recommendations. My goal is simple: to help the reader choose wisely among the different market options, always based on verified information, practical experience, and an independent perspective.
1) Comfortable and ergonomic: Beurer EM 50
Who it is for:those looking for a device with good features and comfortable to use.
Why we chose it:made of silicone, it adheres easily to the body through two gel pads that stay well fixed on the lower abdomen. It weighs 70 grams and measures 9.5 x 19.3 x 1.5 cm, so it is discreet when worn. It works through the TENS system (transcutaneous electrical nerve stimulation) and has 15 intensity levels selected via buttons located in the center. It charges via USB and achieves autonomy of up to 6 uses of 20 minutes each.
When starting to use it, I recommend placing it almost on the pubis to feel its effects more, as placing it higher does not relieve pain as effectively. Since it has 15 intensity levels, it is ideal to try them to see which provides the best sensations. In my case, the intermediate levels were the most comfortable, as they provide small stimuli that soothe the area without being too strong. It also has a heat function controlled by a button, but be careful because if the temperature is raised too much, it can burn the skin.
Its weaknesses:it does not come with replacement adhesives, and if you want to buy new ones, since they wear out quite easily and stop sticking, you have to buy them separately at a somewhat high price for our taste.
2) Three massage modes: TensCare OVA Therma Belt
Who it is for:those looking for a device with several usage modes and good features.
Why we chose it:I have mainly used it during the first hours of the first day of the period, when I usually feel the most intense cramps in the lower abdomen. Just adjust it around the waist with the elastic belt, place it on the painful area, and select the heat and massage level.
In just a few minutes, you feel a pleasant heat that helps relax the area and gradually reduces the sensation of tension. I usually start with the lowest heat level and, if the pain increases, move to the second. I have barely used the third because it is quite intense for me, although it is appreciated that this option exists for those who need extra heat. Regarding the massage, it is not a deep massage but a gentle vibration that accompanies the heat and makes the sensation more comforting. For me, combining heat with a light massage was enough to relieve discomfort.
Another aspect I value is that it is completely wireless and rechargeable via USB-C. It does not depend on cables while worn and is quite discreet under a sweatshirt or loose sweater. Since it uses a belt system, it can be used outdoors, as there is no risk of it detaching and falling off, as can happen with adhesive models.
Its weaknesses:the battery could last a bit longer.
3) With belt: HZD NGB521
Who it is for: those who want an effective and aesthetic belt for menstrual pain.
Why we chose it:it features a belt-shaped design that comfortably fits over the lower abdomen. The area in contact with the abdomen is covered with soft fabric, which is comfortable to use but can be too warm in summer. It has a small LCD screen to choose three levels of heat and vibration and charges via a USB cable.
The vibration is gentle but calming, and the belt stays well fixed at all times, even when walking with it. Overall, I think it is a good option for those looking for a portable thermal belt, easy to use and capable of relieving menstrual discomfort without giving up daily routine.
Its weaknesses:the battery drains quickly if the highest levels are used.
4) The most economical: Slimpal Menstrual Thermal Belt
Who it is for:those who want an economical device to relieve menstrual pain.
Why we chose it:it offers quick relief thanks to the combination of heat and vibration, but without complications. Like the other models, just place it on the lower abdomen, adjust the elastic belt, and choose the heat and massage level with the side buttons.
Read more What recipes to prepare when it’s too hot to cook?
It has three temperature levels and one vibration mode. In my case, the medium heat level combined with gentle vibration was the most convincing. It is somewhat larger and bulkier than the other belt-format models, making it less comfortable to use, for example, outside while walking.
Its weaknesses:the massage intensity is low and it is bulkier.
Another interesting model of devices to relieve menstrual pain
If you are looking for a pad-shaped device: Medisana TT 250
Combines heat therapy and TENS electrical stimulation in a compact and portable format. It is easily placed on the lower abdomen and allows adjusting both the intensity of the impulses and the heat to suit each moment. It is wireless, lightweight, and comfortable to wear under clothing.
Frequently asked questions about devices to relieve menstrual pain
Do devices to relieve menstrual pain really work?
Yes, they can be effective, especially if they combine heat, TENS electrical stimulation, or both technologies. Heat helps relax the uterine muscles and improves circulation, while TENS reduces pain perception by stimulating nerves. Their effectiveness depends on the intensity of cramps and each person.
Which is better, a device with heat or one with TENS?
It depends on your needs. If you have mild or moderate discomfort, a heat belt is usually sufficient. If the pain is intense or frequent, a device combining heat and TENS usually offers more complete relief.
Can they be used all day?
Yes, although it is advisable to follow the manufacturer’s instructions. Most are designed for sessions of 20 to 30 minutes, although they can be used several times a day with breaks between sessions.
Are they safe?
Generally, yes. However, TENS devices should not be used if you have a pacemaker or other implanted electronic devices, during pregnancy (unless medically advised), or on damaged skin. It is always recommended to read contraindications before first use.
Can they replace painkillers?
Not necessarily. Many people manage to reduce medication use thanks to these devices, but if the pain is intense, it may be necessary to combine them with treatment recommended by a healthcare professional.
Are they useful for endometriosis?
They can help relieve some pain associated with endometriosis, especially models with TENS, but they do not treat the disease. If the pain is very intense or disabling, it is important to consult a gynecologist.
How are they placed?
They are usually placed on the lower abdomen, right where cramps appear. Some models also allow placement on the lumbar area if the pain radiates to the back.
Can heat devices cause burns?
If used correctly, no. Most have several temperature levels and automatic shut-off systems to prevent overheating. Still, it is not recommended to use them while sleeping or on very sensitive skin.
Do they make noise?
Models that only provide heat are practically silent. Those with vibration or massage generate a slight hum, although it is usually not bothersome.
How long does the battery last?
It depends on the model and the heat level selected. Generally, autonomy ranges between 2 and 6 hours, enough for several sessions before needing to recharge.
Can they be worn under clothing?
Yes. Most are compact, lightweight, and have an adjustable belt that allows fairly discreet use while working, studying, or walking.
What should I consider before buying one?
The most important aspects are:
- The type of technology (heat, TENS, or both).
- Adjustable intensity levels.
- Battery life.
- Comfort and belt fit.
- Size and weight if you plan to use it outside the home.
- Ease of use and material quality.
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*All purchase prices included in this article are updated as of August 18, 2026.
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