DO NOT use ONEflow in the following cases:

• For implanted electrical devices (such as pacemakers)
• In the presence of larger metal implants in the pain area. Copper spiral is no problem!
• For insulin pump wearers
• If you have a high fever (e.g. > 38 °C)
• For known or acute cardiac arrhythmias and other cardiac excitation and conduction disorders
• For seizure disorders (e.g. epilepsy)
• If you are already pregnant
• If cancer is present
• After surgery, where increased muscle contractions could disrupt the healing process
• Close to the heart. Stimulation electrodes should not be used on any part of the anterior chest (indicated by ribs and sternum), especially not on both large pectoral muscles. Here it can increase the risk of ventricular fibrillation and cause cardiac arrest
• On the bony skull, in the area of ​​the mouth, pharynx or larynx
• In the area of ​​the neck/carotid artery
• In the genital area
• On acutely or chronically diseased (injured or inflamed) skin (e.g. painful and painless inflammation, redness, skin rashes (e.g. allergies), burns, bruises, swelling and open wounds as well as those in the healing process), on surgical scars that are in the process of healing )
• Using the ONEflow does not replace medical consultation and treatment. If you have any type of pain or illness, always consult your doctor first!

ONEflow is an innovative remedy that can relieve menstrual pain. It is a portable TENS machine specifically designed to relieve period pain.

No, the use of ONEflow during pregnancy is strictly prohibited. If you are pregnant or think you may be pregnant, you should consult your gynecologist before using ONEflow.

The ONEflow TENS device itself has no side effects. The pads we use are generally well tolerated and side effects are rare. The pads are also latex-free and allergy sufferers friendly. If you experience skin irritation or something similar, we ask you to pause the use and consult a gynecologist.

Definitely! ONEflow is designed to relieve primary menstrual pain (dysmenorrhea). But it can also help relieve the pain of secondary menstrual pain due to conditions such as endometriosis, fibroids, PCOS, adenomyosis or pelvic inflammatory disease.

However, if you suspect or detect such an illness, we advise you to urgently consult a gynecologist. ONEflow does not cure illnesses, but rather helps you relieve the pain or make you forget it completely.

No! The device is completely quiet, so no noise can be heard. With the drop pads you can also wear it so no one even sees it.

Yes, you can also use our ONEflow TENS device with a spiral. It works with both the copper and hormonal IUDs. However, if you are unsure, please contact a gynecologist beforehand.

How do we best say this? It's almost too good to be true - TENS technology is a technology that has been around since the 1970s and has been developed over time, making it even safer. It is a technology that has been used in physiotherapy for several years and is sometimes even covered by health insurance companies. So not only doctors, but also professional athletes swear by this technology for pain treatment for muscle pain - AND also Dr. med. Ulrike Lange (co-founder) is more than convinced by TENS technology. Additionally, our ONEflow is TGA certified, FDA approved and CE marked.

Yes, definitely! ONEflow is an effective remedy for menstrual problems. The TENS technology used in ONEflow is a recognized pain relief method that has been used in physical therapy for muscle pain for several years.

ONEflow is a universal remedy for menstrual cramps and can be used safely by most women and other menstruators. However, if you have existing health conditions or are unsure, we recommend that you consult a gynecologist before using it for the first time.

No, ONEflow is not waterproof. Please ensure the device and pads are and remain dry before use. Your ONEflow must under no circumstances come into contact with water to ensure proper function and avoid damage.

ONEflow is a rechargeable device because we want ONEflow to be your forever companion. It comes with a USB charging cable so you can easily charge it whenever you need it. You can connect the charging cable to a laptop or to a socket using a USB power adapter (output: max. 5 V/2 A). It takes approximately 40 minutes for your ONEflow to be fully charged and the battery lasts up to 8 hours (net running time).

Every person and their perception of pain and pain tolerance are different. Therefore, we cannot say 100% that it completely stops the feeling of pain for everyone. BUT it is extremely effective in pain management and pain reduction. In most cases, the pain relief is so extreme that it feels like you've hit the 'off' switch on your cramps.

Definitely! The design and shape were specially developed so that you can wear it from anywhere - especially outside your four walls. The Drop Pads are the perfect to-go solution. Just please do not wear it for swimming or showering and avoid contact with water completely.

Many of our customers use ONEflow while they sleep. It is not harmful. However, we don't recommend it for safety reasons as it could come off while you sleep and get on places like your neck or face.

ONEflow is specially designed to relieve period pain - including the pads, which have a perfect shape for your abdomen and back. The good news, however, is that TENS devices have been used in physiotherapy for several years to relieve other types of pain - especially all pain around the muscles and thus for muscle relaxation. IMPORTANT: However, this should always be done in consultation with a gynecologist.

Yes, you can wear ONEflow while exercising. The device is small and discreet and can easily be worn under your clothes. It is designed for active lifestyles, so you can get relief from menstrual pain while exercising. Just not when swimming!

Can I use ONEflow throughout my period?

No, for security reasons ONEflow cannot be used while charging. Please wait until the device is fully charged before using it.

Pain is very different and does not have a “one size fits all” – but ONEflow should be exactly that – uniform for every body. Technology works by stimulating something we all have; Dermatomes on our skin. ONEflow's electrode pads are designed to move comfortably and adapt flexibly with all bodies. The different pads allow you to freely choose what works best for your body. In addition, our pads have the largest possible contact surface for maximum pain relief.

ONEflow was specifically designed for menstruating people who suffer from period pain. It is compact, portable and easy to use, making it an ideal TENS machine for period pain. Above all, it is also the perfect companion!

We recognize that every body responds differently to pain relief, so we have a hassle-free returns process. If you feel that ONEflow is not helping you with your pain, we will give you a full refund.

We have a 60-day return policy, which means you have 60 days from receipt of your item to request a return.

You have the right, and we encourage you, to test your ONEflow as often as possible within these 60 days to make sure it works for you.

‍To start a return, you can contact us at hello@menstruflow.de. If your return is accepted, we will send you a return shipping label and instructions on how and where to return your package. Returns without prior request will not be accepted. Please note that you use the complete starter kit including the original packaging as a return. Used pads that were ordered outside of the starter kit cannot be exchanged.

Imagine “buzzing” is a feeling – that’s exactly how electric currents feel. It's a bit like having the tingle of television interference (TV static) on your skin. It's completely painless, but can be a little strange at first!

ONEflow uses TENS technology (transcutaneous electrical nerve stimulation) to relieve period pain. Electrical impulses are delivered to the painful areas of the skin to block pain signals and produce the body's own pain-relieving substances (endorphins).

As long as you want. Once you turn on ONEflow, it runs for 30 minutes and then turns off. You can then turn it on again as often as you need. With a fully charged battery it will last for 7-8 hours (net running time).

The effects of ONEflow may vary from person to person. Some users report immediate pain relief, while others require regular use over a few hours or days to experience significant relief from their menstrual pain.

The frequency of changing the pads depends on your individual use and your personal comfort - do you also wear the pads when exercising? Do you find using it too often unhygienic? And and and. We would be happy to help you find out how often you should change the pads with our subscription model. Once you have completed your subscription, you will receive new pads regularly during the selected period, so you never run out of them. In general, the pads last up to 30 uses (1 use = 1x stick on and take off again).

ONEflow is easy to use. The device is attached to the body using the drop pads and/or the flow pad. It's best to place the pads exactly where you feel the pain. The intensity can be individually adjusted between 20 levels.

Not yet, but we're working on it! 🙂 News about this will follow in the newsletter.

ONEflow can be purchased directly on our website. You can also sign up for our subscription to receive regular deliveries of your replacement pads - so you always have them on hand. Our ONEflow will later be available in pharmacies and retail stores. Updates will follow in the newsletter.

ONEflow's different modes and intensity levels are designed to provide you with a tailored solution for your pain relief. You can choose between 20 intensity levels and 6 modes. This allows you to adapt the therapy 100% to your comfort level and the degree of pain you experience. The different modes (pulsating as well as continuous and continuous pulses) allow you to choose the type of pain relief that is most comfortable and effective for you.

Our pads are designed to give you a reliable and comfortable experience across multiple uses. As a rule, if handled carefully and used regularly, they last for around 30 uses (1 use = 1x stick on and take off again).

To support the longevity of the pads, I recommend that you keep the skin area clean and dry before applying the pads. After each use, you should carefully remove the pads and stick them back on the original protective film. Store them in a cool, dry place to maintain adhesive strength.

You will automatically receive your order confirmation by email within 24 hours. Please note that this can also end up in your spam folder. If you have not received your order confirmation within this period, please feel free to contact us by email: hello@menstruflow.de

We can only make changes to orders that have not yet been processed for shipping. Once your order has the status "Preparation for Shipping", "Shipping" or "Delivered", we unfortunately cannot make any changes to your order.

To make changes to your order, please email us at hello@menstruflow.de or fill out the following contact form.

Yes, your order will be shipped with a tracking number. You will find this in our confirmation email and can use it to track your order using the following link: Online shipment tracking

First of all, we apologize for that! To proceed further, we ask you to check whether your money has been debited and whether you have already waited at least 5 working days. We cannot influence delays in delivery times on the part of our shipping service provider, which can sometimes mean that it takes a little longer. We then ask you to track your order using the following online shipment tracking link. Is your order possibly with your neighbors or in a branch?

If you still can't find your order, send us an email to hello@menstruflow.de or fill out the following contact form.

Since we imagine we live in a world in which all women and other menstruators can continue their everyday lives without restrictions during their period or if they have endometriosis, we of course deliver worldwide.

We offer the following payment options:

• Visas
• MasterCard
• American Express
• maestro
• UnionPay
• ShopPay by Shopify (Express Checkout)
• Apple Pay
• Google Pay
• PayPal

National delivery within Germany is free from 80 EUR. After that we charge a flat rate of EUR 3.95 per order.

Individual prices are calculated for international deliveries and we only deliver within the EU: Zone 1: €7.20 / Zone 2: €7.95 / Zone 3: €8.60 and free shipping for orders over €165.00. You can find the details about the zones here: Shipping

Once you have placed your order, we will send you a confirmation email to track the status of your order. Once your order has shipped, we will send you another email to confirm the estimated delivery date and the link to track your order (if the shipping method allows this).

We will pack your order within 24 hours during working days. It will then be handed over to DHL and sent by goods post. This means your order receives a tracking number, is insured and the delivery time is approx. 2-3 working days. Please note that we are currently in PRESALE and will deliver from August 25th, 2023.

You can check the shipment status at any time under online shipment tracking .

{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"We want you to be completely satisfied with your purchase. If the ONEflow does not meet your expectations, you can make use of our 60-day money-back guarantee. Here are the steps you should follow:\n\n👇 Contact us: To start the process, please contact us by email at hello@menstruflow.de or fill out our contact form. Please state your order number and the number of products you wish to return.\n\nReturns: If you return the ONEflow in its original packaging (with unopened sealing sticker/shrink-wrapped) and unused, we will cover the costs for you. Unfortunately, we cannot cover the shipping costs for using the 60-day money-back guarantee if the product has already been opened. We will send you a return label and all the necessary instructions for the return.\n\nConditions for full refund: In order to receive the full refund amount, it is necessary that the ONEflow is returned including all original accessories and the original packaging. If parts of the ONEflow starter kit are missing when returned, the following amounts will be deducted from the refund amount:\n\nONEflow connection cable: €4.95\nONEflow original box including foam: €7.95 - €4.95 each individually\nCase: €14.90\nInstructions: €3.95\nCharging cable: €4.95\nReplacement pads: Please note that opened packaging of replacement pads cannot be returned for hygiene reasons.\n\nSpecial promotions: During special promotions such as Black Friday, Cyber ​​Monday, Christmas and others, we cannot cover the shipping costs for returns. This rule applies regardless of our other goodwill for returns or influencer codes. We ask for your understanding that under special offer conditions, it is not possible to cover the shipping costs for returns."}]}]}

Please note that we no longer take back unpacked and worn pads for hygiene reasons. If the following points are met, you can return the product within 14 days of the shipping date:

• Unused
• Original packaging

If your ONEflow does not perform within normal tolerances due to a defect in materials or workmanship within a period of one year beginning with delivery from ONEflow, we will, at our sole discretion:

(a) Repair or replace ONEflow
(b) grant a credit in the amount of the purchase price
(c) provide free replacement.

In the event of a warranty claim, the date of purchase must be proven using the sales receipt or invoice. Warranty repairs should be made during the warranty period for either the ONEflow or the replacement parts.

The following cases are excluded from the guarantee:

(1) Damage caused by improper operation, e.g. failure to follow the instructions for use;
(2) Damage due to repairs or interventions by the customer or unauthorized third parties;
(3) Damage that occurs during transport from the seller (menstruflow GmbH) to the consumer;
(4) Accessories subject to normal wear and tear. The electrode pads, connection cables, silicone cover or gel pads are not covered.

D. Liability for direct or indirect consequential damage caused by ONEflow is excluded, even if the damage to ONEflow is recognized as a warranty claim.

In this case, please send us an email to hello@menstruflow.de . The email should contain the following points: Order number Photo of all the items you received from us with the order and photo of the incorrect item.

If you send the products back in their original packaging (with an unopened seal sticker/sealed) and unused, we will cover the costs for you. To receive a return label, send us an email to hello@menstruflow.de or fill out the following contact form .
If you make use of the 60-day money-back guarantee, unfortunately we cannot cover the shipping costs. Please report the return in advance by email with the order number and number of returned products.

Special promotions

Please note that during special promotions such as Black Friday, Cyber ​​Monday, Christmas and other special promotions, we cannot cover the shipping costs for returns. This regulation applies regardless of our other goodwill for returns or influencer codes. We ask for your understanding that it is not possible to cover the shipping costs for returns under special offer conditions.

The red indicator light lights up during charging. When fully charged, the red light goes out and the blue light stays on. When ONEflow is on, the blue light flashes. As the intensity increases, the blue light flashes faster.

This has happened to all of us - so don't worry! Alternatively, you can simply use a piece of cling film or, even better, a plastic wrap/film. The stronger the film itself is, the better the shape of your pads will hold.

Before you apply your ONEflow, you should prepare your skin:

• Trim excess hair in the treatment area instead of shaving to avoid skin irritation.
• Wash your skin and dry it completely.
• The treatment area should be free of lotions/oils.

• Peel off the protective film on the pads (IMPORTANT: Save the protective film for reuse; it is best to put it back in your FREE menstruflow case)
• Stick ONEflow to your lower abdomen (and/or lower back).
• Choose between using the large flow pad plus the two small drop pads, just the small drop pads or just the flow pad.
• Briefly press the ON/OFF button on the ONEflow. By default, ONEflow starts in Mode 1 with the lowest intensity setting. The blue light indicates that ONEflow is on.
• Short press the ON/OFF button to switch modes. You can find the TENS modes in our attached instructions.
• Press the “+” or “-” to adjust the intensity.
• To turn off ONEflow, press and hold the POWER button for 3 seconds. The LED goes out.
• After using ONEflow, be careful when removing it from your lower abdominal area. Reattach the protective films to the gel pads to protect them and store them in your menstruflow case.

So that you can benefit from your ONEflow for as long as possible, we recommend keeping it away from water when storing it. It's best to use the menstruflow case we have included, which you can close airtight.

You should stick your pads back on the foil provided after each use. Please be careful not to lose them and protect the adhesive sides from dust. Here too - it's best to store it in our FREE menstruflow case.

Before you proceed, make sure ONEflow is turned off. The large flow pad has two push buttons in the middle to which the device is attached. At the bottom of the device is the connection for the connecting cable for the small drop pads. You can also connect this and attach the two small drop pads to the end using the existing snap fasteners.

TIP: You can either attach the TENS device directly to the flow pad in the middle or connect it to the electrode cable for a to-go version. This means you can attach the device to your pants using the included clip, while the pad sticks hidden to your abdomen.

As soon as you have attached your ONEflow to your body and switched it on, it will begin therapy in mode 1. Briefly press the ON/OFF button to switch modes. It's best to try it out here to find out which mode suits you best. Our co-founder Polina, for example, prefers to use the 3rd or 6th mode.

Place the electrodes on the area where you feel pain. Perform treatments and adjustments based on your personal comfort. Our customers report that they usually wear it very low on their abdomen or lower back. You can either use just the large flow pad, just the drop pads (perfect for on the go) or all of them together.

When you take out our subscription, you will regularly receive replacement pads for your ONEflow TENS device against period pain: You decide whether you want the flow pads and drop pads or just one of the two to be delivered. With just a few questions, we can tailor the subscription to you and your cycle. This way you can be sure that you are always well equipped to relieve your period pain in a timely manner and to cope with everyday life despite your period. You can find out more about the right to withdraw from the contract here.

We understand that every menstrual cycle is unique. That's why we offer flexible options for our subscription model. You can adjust the frequency of delivery of your replacement pads for the ONEflow TENS device for period pain at any time in your account. You can also adjust whether you only want flow pads / drop pads or both. This way you can ensure that you always have the right remedy for menstrual cramps, especially when you need it most.

The frequency of delivery of replacement pads through our subscription model depends on the regularity of your period. We adapt the deliveries to your individual cycle to ensure that you always have enough pads on hand to optimally use our ONEflow as a remedy for menstrual problems.

Of course! Education about pain and ONEflow as a remedy for period pain is very important to us. We have a portfolio of documents that we can always make available immediately. In addition, we are happy to speak individually about personalized and customized information materials in individual cases. Simply contact us directly.

PLEASE PLEASE! We are definitely open to more creative ideas and new ways of working together. Since we are still in the starting blocks ourselves, we are also very flexible and welcome any input 😊 Feel free to send us your idea(s) by email to B2B@menstruflow.de or via the contact form.

Since we are still very new to the market, we are still trying out different ways of working together. We are happy to discuss test products individually in individual cases. In general, we can only offer it as part of employee benefits for companies of certain company sizes.

We are open to any cooperation - from content creators in the field, podcasts, magazines to brands.

Since our vision is a world in which women and other menstruators can continue their everyday lives during their period or with endometriosis without restrictions - but above all pain-free - we would like to share our message with everyone out there! That's why we're very happy to receive support in spreading our vision with ONEflow. We are open to working with content creators who educate their community about period pain and/or endometriosis. We are also open to podcast contributions and magazine contributions (online and/or print).

What know-how can we provide as menstruflow? Miss Dr. med. As a long-standing, experienced gynecologist, Ulrike Lange is part of our founding team, which means we have professional expertise at our side and can pass it on. Otherwise, we are also open to further ideas and suggestions - please send an email to B2B@menstruflow.de.

We have spent a long time thinking about how we can achieve our vision of a world in which women and other menstruators can continue their everyday lives without restrictions despite having periods or endometriosis. And what could be more brilliant than companies that can offer their employees the ONEflow offer? We want to become the new “job bike”, only with our ONEflow. It's a win-win-win for everyone involved! The exact concept can be discussed on a case-by-case basis. We are open to companies of all sizes because every menstruating person deserves to get through everyday life pain-free. For further details, we look forward to your inquiry by email to B2B@menstruflow.de or via the contact form.

YES YES and YES! We are currently “only” an online shop. But since we want to spread our message as quickly as possible, we are more than open to offline sales in pharmacies or retail stores. We are already in contact with the first pharmacies and are looking forward to being able to onboard more. We would be happy to discuss exact details personally.

If you are interested, we would be happy to receive an email at B2B@menstruflow.de.

We would like to start joint collaborations with other brands in the FemHealth or FemTech sector. We are open to mentioning each other in the newsletter, social media feed, competitions and so on - here we are welcome to let our creativity run wild during joint brainstorming sessions and consider what type of collaboration suits all parties best. Have we piqued your interest? Then please contact us by email at B2B@menstruflow.de or via the contact form.