Frequently Asked Questions


Snoring is caused by vibration of the structures of the throat during sleep. When you sleep, the muscles of the upper airway and tongue relax and partially collapse. The narrowest parts of the throat can then create turbulence in the air flowing through your upper airway as you exhale – creating the snoring sound.

You’re more likely to snore if you:

  • Are overweight
  • Smoke
  • Drink too much alcohol
  • Sleep on your back

While snoring itself is not detrimental to your health, research shows that snoring affects the sleep quality of the snorer and the bed partner. It also may be indicative of a more serious condition called mild obstructive sleep apnoea (OSA). Mild OSA is a serious health condition associated with other health problems, such as high blood pressure and increased risks of heart attack, stroke, or death.

Sleep apnoea is often associated with snoring, daytime sleepiness, and fatigue. It is also common for loved ones of sleep apnoea patients to notice that their partner momentarily holds their breath or stops breathing during the night. Sleep apnoea is a serious health condition associated with health problems like high blood pressure and increased risks of heart attack, stroke, or death.

If you have these symptoms or are concerned you may have the condition, please see your doctor. With a sleep test, your doctor can diagnose your condition and recommend a course of action.

eXciteOSA improves the muscle function in the tongue through stimulation therapy. Improvement of muscle function helps to prevent the tongue from collapsing backwards and trains the upper airway to remain open during sleep, thereby improving sleep quality.

Multiple clinical studies have tested the effectiveness of eXciteOSA therapy and have observed statistically significant reductions in both mild obstructive sleep apnoea and snoring measurements. In a group of 65 mild OSA patients, 79% noticed a notable reduction in three different mild OSA measurements (AHI, ODI, and ESS Score). In a group of 115 snoring patients, 90% demonstrated an objective snoring reduction of 46%.

We have additional ongoing clinical trials that will be completed in the near future. More information can be found at

Yes, the efficacy of eXciteOSA has been proven in multiple clinical studies. The product is a registered medical device which can be prescribed by sleep physicians. Click here for a list of our partner sleep clinics.

Your eXciteOSA device should be used for twenty minutes a day, once per day, for six weeks, and a minimum of twice per week thereafter.

Each session comprises of four, 5-minute stimulation therapy phases.

Some patients experience a slight accumulation of saliva during the treatment, and this usually reduces after a few therapy sessions.

You will not be eligible for eXciteOSA therapy if you…

  • are pregnant or may become pregnant.
  • have a pacemaker, or an implanted electrode.
  • have dental braces or jewellery in your mouth.
  • are suffering from mouth ulcers or recent dental work.
  • have or are suspected of having an AHI ≥ 15 as determined by evaluation by a Sleep Health Professional with a sleep study.

Our clinical trials did not include patients with a BMI over 35, so it is not known if the eXciteOSA® therapy will be effective in patients with a BMI above 35.

No serious side effects have been reported in clinical trials.

For those who experienced them, side effects reported were all minor (for example tongue tingling, drooling, tight jaw).

eXciteOSA works by promoting endurance of tongue muscles via neuromuscular electrical stimulation (NMES). NMES is a familiar and well-established technique in sports medicine.

If you are not feeling the benefits of the eXciteOSA therapy, you may return the device to us for a partial refund. You must start using the device within 1 x calendar week of buying eXciteOSA. For optimal results, you should use it every day for 6 weeks. However, we know that we are all only human and people forget things – so we ask that you use it for a total of of 42 therapies within an 8-week period (56 days). A session is equivalent to 20 minutes.

In addition, it is recommended that you increase the therapy intensity gradually over the treatment period to ensure that you give the treatment every chance of being effective. Please note that once the initial therapy is finished and to maintain the treatment you need to use the device at least twice a week forever, to continue benefiting from better sleep.

eXCiteOSA works by delivering gentle pulses to the tongue muscle to tone it. During therapy you may experience a tingling sensation on your tongue, but it should not be painful. The therapy has 15 levels of intensity, you choose the level you are comfortable with and build it up as you progress with your therapy.

No, the device is worn during the day while awake. Each therapy session lasts 20 minutes.

The device can be used at any point during the day. We recommend using the device during a time of day that will allow you to build a steady habit out of your therapy.

No, you only have the wear the device 20 minutes daily while awake.

eXciteOSA Patients

I’ve purchased my eXciteOSA device.
What’s next?

  • Control unit
  • Mouthpiece
  • USB charging cable
  • Adapter
  • Quick Start Guide

Most users notice improvements after the first 4-6 weeks of continuous and consistent use. Efficacy is dependent upon adherence to the recommended therapy program of 20-minute sessions, completed 1 time each day, for 6 weeks.

Therapy sessions are 20 minutes long, are completed 1 time each day, for 6 weeks. A minimum of two 20-minute sessions are recommended each week thereafter. Failure to complete the therapy sessions following the 6-week period may result in a return of your mild obstructive sleep apnoea and/or snoring symptoms. Consistency is key!

The control unit is charged through the provided USB adapter and USB-C charging cable. The blue light of the control unit will blink during charging and become continuous when fully charged.

The mouthpiece is connected to the control unit through a USB connector. The mouthpiece is placed in your mouth, positioning it around your tongue. Two tabs of the mouthpiece should sit comfortably above and two sit below – like a glove. There’s no need to bite down on the mouthpiece or do anything to hold it in position. The mouthpiece is designed so when you gently close your mouth, it will naturally sit around your tongue and won’t move during the therapy.

We are confident that our mouthpiece will function safely and as intended for 90 days. Beyond this period, the safety and functional performance of the mouthpiece is not guaranteed and places our patients at undue risk. This is also to ensure the performance and safety of the mouthpiece meets recognised international standards

The mouthpiece is made from flexible medical grade silicone which should sit around your tongue comfortably. If you experience any discomfort, reposition the mouthpiece into a more comfortable position. Like any object when placed in the mouth, you might experience increased saliva in your mouth while doing the therapy, or in rare cases a gag reflex.

If you experience excessive salivation during your therapy, you can pause the therapy, address the saliva, and then continue with the therapy.


The mouthpiece should be cleaned before and after each use. Use tap water to clean the mouthpiece. Dry with a clean towel and store in a dry place. DO NOT clean with alcohol-based cleaning solutions.

Control Unit

Wipe the control unit surface with a damp cloth or antiseptic wipe once a week.
DO NOT immerse the control unit in water or cleaning solutions. Always store the control unit in a dry place.

The device can be used at any point during the day. Some users prefer to use the device right before sleep because this helps them be more consistent. We recommend using the device during a time of day that will allow you to build a steady habit out of your therapy.

When the therapy is running, the timer on the app will tick down. Additionally, the blue LED ‘S’ logo on the control unit will blink once every 5 seconds. Most importantly, you should feel gentle contractions of your tongue muscle.

Once you begin therapy, you’ll have the ability to manually change your therapy levels during every session, every day. This is what makes this experience so unique to you. To change the level, simply slide your therapy level setting at the bottom of your screen on the eXciteOSA mobile app during your session.

While therapy level can be controlled manually, there is a cutoff in place to ensure that the device does not exceed established safety limits.

It is important to set the device to the highest possible therapy level that still feels comfortable for you. This will ensure the best possible outcome.

Remember that this journey will be unique to you; your intensity threshold might be 5 or 13. While it is not required to reach the maximum end of the scale, it is recommended to start at a level that you are comfortable with, and aim to be at intensity level 10 or higher by the time you have completed 6 weeks of daily therapy.

It is important to note that therapy levels outside of your comfort zone will not improve outcome or speed up results.

Each 20 minute session is broken up into four 5-minute intervals. Each interval will prompt the device to deliver a different frequency. The frequencies are 3Hz, 10Hz, 20Hz, 3Hz. Each 5-minute phase is meant to train your tongue in a different way.

It is recommended to only do one session each day. Just like your body needs to recover after a workout, your tongue also needs to rest and recharge.

With one full charge, you should be able to finish six 20-minute therapy sessions. The eXciteOSA app won’t allow you to start a new therapy unless there is adequate charge within the control unit to complete a full session.

If you are not completely satisfied with the eXciteOSA therapy, you may return it to us for a refund, subject to our Terms & Conditions. All Satisfaction Guarantee returns must be postmarked within 30 days of activating the device. All returned items must be in original packaging. The mouthpiece is not included in the offer, we will deduct the cost of the mouthpiece + VAT from the final refund amount.

If your device is defective or damaged, please contact our customer support team through the in-app chat, the most efficient way to reach us, or at [email protected]

If you are not feeling the benefits of the eXciteOSA therapy, you may return the device to us for a refund. You must start using the device within 1 x calendar week of buying eXciteOSA. Terms and Conditions of the Sleep Guarantee: For optimal results, you should use it every day for 6 weeks. However, we know that we are all only human and people forget things – so we ask that you use it for a total of 42 days (6 weeks) within a 56 day period (8 weeks).

eXciteOSA provides a warranty to the original purchaser confirming the product will be free from defects in the material, components and workmanship for a period of 3 months for the mouthpiece from the date of purchase, and 1 year for the control unit.

For valid warranty claims, the user must return proof of purchase to [email protected].

The warranty does not include any misuse or abuse such as dropping the device, immersing the control unit in water or other liquids, or tampering with the device. Any evidence of tampering will void the warranty. This warranty does not apply to “wear and tear” that occurs with normal usage.

A digital version of the Instruction’s for Use is available for download Support Hub – eXciteOSA UK


If you’re having trouble pairing to the device during your first use…

  • make sure that your control unit is totally charged.
  • make sure that both your bluetooth and GPS functionality are turned on in your smartphone’s settings.

Try not to walk too far away from your phone during therapy. Aim to stay within 10 meters.
If there was a high accumulation of saliva during your therapy session, disconnect the mouthpiece from the control unit and dry off the connector. You may need to let the device sit for a few hours. Make sure the connector has dried thoroughly before starting another therapy session.

If you attempted to complete a therapy session while you were within 12 inches of any antenna cables or electrical equipment, retry your session while keeping distance from this equipment.

Some accessories (e.g. Airpods, Smartwatches, etc) that are connected via Bluetooth can interfere with the eXciteOSA connection. Please disconnect these and try the session again.

The Control Unit LED will flash blue and amber if there is inadequate charge to run a full 20 minute therapy session. When the Control Unit logo blinks blue and amber, recharge the Control Unit.

If your Control Unit LED appears solid amber when you connect it to a charging cable, this could mean that some moisture is inside of your control unit USB port. Please disconnect your control unit from the charging cable. Usually, if you wait 24 hours and try again, it should be operational. If not, please contact us at [email protected]

Gradually increase your therapy levels until you feel stimulation again. Over the duration of your therapy program, your tolerance levels will increase, which means that you will likely find yourself increasing the therapy level from week to week.

If you cannot feel any stimulation coming from the back electrodes, try to reposition the mouthpiece so it comfortably encompasses your tongue, like a glove. This should allow the back electrodes to make contact with your tongue. Due to the anatomy of the tongue and the way the pulses travel, the stimulation may be felt more in one area, usually in the front (closer to the tip of the tongue). As long as you can feel stimulation on each side of the tongue (left and right), the stimulation is functioning correctly.

If you still cannot feel any stimulation on one side or at all, check for any visible damage to the mouthpiece and try gently washing the mouthpiece.
You may need a replacement. Please contact our customer support team through the in-app chat, the most efficient way to reach us, or at [email protected]

For additional information, visit our website at or contact us via email at [email protected].

eXciteOSA® is a registered trademark of Signifier Medical Technologies. ©2021 Signifier Medical Technologies. All rights reserved. EX0025W 02/22