Somnofit-S Anti-Snore Mouth Guard+

Somnofit-S Anti-Snore Mouth Guard+

3.620 reviews
$ 149.99

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Product Details

A small shift in your jaw can make a big difference in how you sleep. The SomnoFit-S is an FDA-cleared mandibular advancement device (MAD) that works by gently shifting your lower jaw forward to help keep your airway open while you sleep. This simple adjustment can reduce snoring and improve nighttime breathing.

Made in Switzerland from flexible biomedical polymers, it’s designed to be discreet, comfortable, and easy to wear. A patented adjustment band lets your jaw move naturally, so it feels less restrictive than other mouthguards.

Product Specs

  • Dimensions: 1.6” x 2.4” x 0.94”

  • Materials: ethylene vinyl acetate and Tritan

  • Manufacturer: OscimedSA

  • Prescription required: no

  • HSA/FSA eligible: yes

  • FDA approved: yes

Key Benefits

  • Reduces snoring and improves breathing

  • Patented adjustment band lets the jaw move freely for added comfort and effectiveness

  • More flexible, discreet, and comfortable than similar devices on the market

  • Perfectly customized fit formed from a mold impression of the wearer’s teeth

  • Can be remolded if needed

Who It’s Not Ideal For

  • Those with central sleep apnea (CSA)

  • Children under the age of 18

  • People with a history of TMD, temporomandibular disorder

  • Anyone with a respiratory disorder

  • Those with loose teeth, abscesses, severe gum disease, or advanced periodontal disease

  • People who wear dentures, braces, or other dental appliances

  • Anyone with implants, crowns, or caps — unless approved by their dentist

Care

Each morning after use, soak the device in warm water with a denture cleaner for at least 30 minutes. You can leave it in the solution all day, though you’ll need to rinse it under running water before putting it back in your mouth.

Keep it in its storage case when not in use. And don’t use harsh chemicals or household cleaners like bleach, ammonia, or mouthwash containing alcohol.

Shipping & Returns

Orders must be placed with approved prescription (where applicable) before 10 a.m. ET to ship same day. Excludes Saturday and Sunday delivery.

A full refund (excluding return shipping) is available for unopened items and unused impression kits within 60 days of purchase.

Some orders require a prescription and by law cannot be processed and shipped until a valid prescription is on file and verified by Sleep Doctor. We can help you obtain a prescription renewal at no extra charge if your prescription has expired or is not accessible. Just place your order and follow the instructions provided to schedule a complimentary virtual consultation with a board-certified sleep specialist.

Free shipping for orders $50 and above in the contiguous U.S. For orders under $50, the shipping rate is $7.99. Orders shipping to Alaska, Hawaii, Puerto Rico, Guam, and Virgin Islands are subject to an additional fee.

Please note that your order may ship in multiple packages.

Once your order ships, you will receive a tracking number and estimated date of delivery. Most customers receive their orders within 4-7 days of shipping. Carrier delays are outside of our control.

Find our full Shipping & Returns policy here.

What's in the Box

  • 2 splints: 1 upper and 1 lower
  • Storage box
  • Impression plate
  • Water temperature indicator
  • Set of flexible straps (5)
  • Instruction manual

Who It’s Best For

  • People who snore heavily and/or frequently
  • Those with obstructive sleep apnea (OSA)
  • People who don’t have dental implants, loose teeth, or advanced gum disease
  • Anyone who has their doctor's permission to use a mandibular advancement device (MAD)

How It Works

The SomnoFit-S works by gently moving your lower jaw forward—a technique known as mandibular advancement. This slight shift helps keep your airway open while you sleep, which can reduce snoring and make breathing easier. 

To customize the fit, you mold the mouthpiece at home using the boil-and-bite method, so it fits your bite comfortably. Boil water, soften the mouthpiece, and bite down. If needed, it can be remolded by repeating the process

How to Use It

Once the mouthpiece is molded to your bite, wear the SomnoFit-S each night before bed. To help ease the adjustment, try wearing it for an hour or two before bedtime while you go about your usual routine—you can still talk and drink thanks to the flexible, adjustable straps. 

Make sure to brush your teeth beforehand. It may take a few nights to get fully comfortable, and that’s totally normal. Start slowly if needed, and with time, wearing it will become second nature, especially once you notice how much easier it is to breathe (and sleep).

Download User Guide Download Size Guide

Videos

Frequently asked questions

What if it doesn’t fit quite right?

If the mouthpiece feels uncomfortable or doesn’t stay in place, it may need to be remolded. Boil water, soften the mouthpiece, and re-bite down to create a better fit.

Why am I producing more saliva?

It’s common to notice extra saliva when you first start using the device. This usually goes away after a few nights as your mouth gets used to it. Make sure the fit feels secure and comfortable.

What if I’m still snoring?

If you’re still snoring, check that the device is positioned properly and that it’s gently moving your lower jaw forward. If it’s not, try adjusting the strap or remolding the mouthpiece for a better fit.

How do the adjustable straps work?

You can choose which of the patented adjustable straps you use based on your jaw’s anatomy. The straps are numbered 1 to 5, with a higher number indicating a tighter fit. Start with the following:

  • If you have an overbite, use strap number 1 or 2.
  • If you have an underbite, use strap number 5.
  • If you have a common bite, start with strap number 3 or 4.

From there, you can adjust the straps as follows:

  • If snoring persists, choose a strap of superior value such as increasing from strap number 4 to 5.
  • If the pressure exerted on the jaw is too strong and causes discomfort, opt for a less potent strap such as strap number 3.
  • Each tension strap should be worn at least three to five nights prior to further increases.
Do mouthguards help with snoring?

Yes, mouthguards can help reduce snoring. Mouthguards like the Somnofit-S are mandibular advancement devices (MADs), meaning they physically push the tongue and lower jaw forward to widen your airway. This decreases the vibrations that can cause snoring when the airway is narrower.

Are anti-snoring mouthguards safe?

Yes, anti-snoring mouthguards are safe and considered medical devices. That said, you should talk to your doctor before using an anti-snoring mouthguard for the first time. People with loose teeth, dental implants, gum disease, and other oral health issues may need to consider a different treatment for snoring.

Can a nightguard cause snoring?

Yes, in certain cases, a mouthguard can cause or increase snoring. This typically occurs when the device is not properly fitted for the user's mouth, or the mouthguard is not specifically designed for people with obstructive sleep apnea (OSA). People who snore should use a custom-fitted anti-snoring mouthguard intended to treat snoring and other symptoms of OSA.

Reviews

3.6
Rated 3.6 out of 5 stars
Based on 20 reviews
Total 5 star reviews: 11 Total 4 star reviews: 1 Total 3 star reviews: 2 Total 2 star reviews: 2 Total 1 star reviews: 4
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20 reviews
  • Marith M.
    Verified Buyer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 5 out of 5 stars
    6/2/26
    I am amazed!

    I have tried a similar device - Snore-X, but it never was as successful as this one. I waited 6 days before posting my review because I can’t believe that I have not had any sleep apnea since starting to wear the Somnofit-S. The form fits my teeth better but I think the strap might be the secret to the way this works. I’m truly impressed!

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  • Phil A.
    Verified Buyer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 5 out of 5 stars
    3/25/26
    Not snoring any more

    This mouth guard is high quality and small so it fits really well and looks like it will last a lot longer than cheaper versions.

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  • Marian F.
    Verified Reviewer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 1 out of 5 stars
    10/1/25
    Another useless tool that did nothing

    I tried this for weeks in the desperate hope I could not only sleep, but keep my partner sleeping since I wake him up with my snoring. He said I actually snored louder with it on. Very disappointed.

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  • Connie P.
    Verified Buyer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 5 out of 5 stars
    9/27/25
    Somnofit-S

    After a week I am already sleeping better. The device is comfortable especially for my small mouth.

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  • Justin V. S.
    Verified Buyer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 5 out of 5 stars
    8/18/25
    It truly works

    I was a bit skeptical but purchased it anyway. I've got a small mouth and reading reviews this was one that said should fit. It did. Worked the first night. Only down fall is the amount of saliva you seem to produce when using it.

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  • Ricardo
    Verified Reviewer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 5 out of 5 stars
    7/29/25
    It Works! and Incredible Customer Service!

    My wife has always complained about my snoring, and I’ve tried several other mouth guards in the past. None of them worked well, and all left my mouth feeling sore. The Somnofit has been a gamechanger. It is by far the most comfortable one I have used, and according to my wife, my snoring has gone from sounding like a garbage disposal to more of a soft purr.

    To be completely honest, it is still a mouth guard, so there is naturally some level of discomfort. However, what really sets this product apart is the customer service. When I reached out with questions about comfort, their team was incredibly responsive. They worked with me for over a week, offering helpful tips and suggestions to improve the fit. That kind of support is rare and shows how much they truly care about customer satisfaction. I genuinely appreciate a company that stands behind its product and takes the time to help.

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  • Robert S.
    Verified Buyer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 5 out of 5 stars
    7/21/25
    Somnofit

    Mouth guard for sleep apnea. Well so far, but only a few nights use yet

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  • Richard P.
    Verified Buyer
    Reviewing
    Somnofit-S Anti-Snore Mouth Guard+
    Rated 1 out of 5 stars
    7/21/25
    Bulky

    It is as the pictures show but not as the verbiage suggests. I can’t see how anyone can fit that device in their mouth comfortably or anything close to that. Poor fit. Too thick and too short, addressing only the front of the mouth. Also comes with a long set of warning that the device causes/could cause all manor of problems. I don’t see how the glowing reviews are warranted. I followed instructions, have used mouth guards many times (which is really what this is, a set of upper and lower with band(s)).

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