Two mouthpieces we’re still checking.
Neither of these is recommended. Both are widely sold online, mouldable at home and adjustable, which is why we looked. Our checks found thin evidence for each specific model.
We haven’t tested either mouthpiece, and no clinician has reviewed these profiles. Links below are ordinary links; we earn nothing from them.
| The same questions | SnoreRx | Somnofit-S |
|---|---|---|
| Evidence for snoring, this model | None found | None found (one trial after surgery; snoring not measured) |
| Regulatory status | US: FDA-cleared for snoring (K170825), not sleep apnoea; no effectiveness trial in the submission | Swiss maker: snoring and mild-to-moderate sleep apnoea. US seller: snoring only. FDA record found names an earlier model |
| Price | Not verified | Not verified |
| Suits | Adults with simple snoring, after an assessment | Adults with simple snoring, after an assessment |
| Main drawbacks | Tooth or gum discomfort, jaw-joint pain, bite changes | Jaw discomfort; replace by 18 months |
| Not for | Dentures, braces, loose teeth, gum disease, jaw-joint problems | Removable dentures, jaw-joint pain, loose teeth, fewer than ten teeth in either jaw, under-18s, teeth grinding |
| Sources checked | 26 Oct 2026 | 26 Oct 2026 |
On a small screen, swipe the table sideways.
For how these compare with dentist-made mouthpieces and every other option, see all the options at a glance.
SnoreRx
What it is: a heat-moulded mouthpiece that moves the lower jaw forward in one-millimetre steps.
Regulatory status: FDA-cleared in 2017 (K170825) as an over-the-counter aid to reduce snoring in adults, not for sleep apnoea. The submission lists usability and material-safety testing, not a trial of whether it reduces snoring. We couldn’t confirm whether the clearance covers SnoreRx Plus.
Evidence: we found no study of SnoreRx itself. Evidence for mouthpieces in general mostly comes from dentist-made devices.
The maker lists possible tooth or gum discomfort, jaw-joint pain and bite changes. It excludes dentures, braces, loose teeth, significant gum disease and a history of jaw-joint problems.
Somnofit-S
What it is: heat-moulded trays joined by bands you can swap to move the jaw further forward. Made in Switzerland by Oscimed.
Depends where you buy it: the Swiss maker lists it for snoring and mild-to-moderate sleep apnoea. The US seller says it is FDA-cleared for snoring only. The FDA record we found names an earlier device, SOMNOFIT; we couldn’t confirm it covers today’s model.
Evidence: the only randomised trial naming Somnofit-S was after surgery under general anaesthesia. It found no significant improvement and didn’t measure snoring. The study the US seller cites doesn’t name the device in its abstract.
The maker excludes removable dentures, jaw-joint pain, loose teeth, fewer than ten teeth in either jaw, under-18s and teeth grinding. It typically lasts 8–15 months and should be replaced by 18 months, which matters for the running cost.
Before spending anything
US guidelines advise an assessment by a sleep physician before using a mouthpiece for snoring. Check the instructions for the exact model sold in your country, and whether a moulded device can be returned at all.
Original sources & their limits
- SnoreRx: official model details and FAQ ↗
Manufacturer information on fit, exclusions and side effects. Not independent evidence of effectiveness.
- FDA 510(k) K170825: SnoreRx (summary) ↗
Cleared in 2017 as an over-the-counter aid to reduce snoring in adults; not for sleep apnoea. The submission lists usability and biocompatibility testing, not an effectiveness trial. Whether it covers SnoreRx Plus was not confirmed.
- SnoreLessNow: Somnofit-S product details (US seller) ↗
Seller information. Describes the device as FDA-cleared for snoring only. Marketing statements are not treated as verified results.
- Oscimed: Somnofit-S anti-snoring orthosis (manufacturer, English) ↗
Swiss manufacturer page. Lists use for snoring and mild-to-moderate sleep apnoea, exclusions, and a typical life of 8–15 months with replacement by 18 months. Its 55% figure refers to oral appliances in general, not this model.
- Oscimed: SomnoFit-S, orthèse anti-ronflement (manufacturer, French) ↗
French version of the manufacturer page, read with AI-assisted translation. Same exclusions and general-appliance figure as the English page.
- FDA record: SOMNOFIT, K060795 ↗
The record names SOMNOFIT, not Somnofit-S. We have not confirmed that it covers the model sold today.
- Mandibular advancement device study cited by the Somnofit-S seller (Sleep Science, 2016) ↗
Abstract read. 30 people with snoring and sleep apnoea, compared with themselves before and after three months. The abstract does not name the device, so we can’t confirm it tested Somnofit-S.
- Randomised trial of Somnofit-S after general anaesthesia (Journal of Clinical Medicine, 2026) ↗
Full text read. No significant difference in the main breathing outcome on the first night after surgery; snoring was not measured. 12% removed the device within two hours because of jaw discomfort.
- Clinical practice guideline: oral appliance therapy for snoring and sleep apnoea (AASM & AADSM, 2015) ↗
Read in full. Recommends oral appliances for adults with primary snoring who want treatment, after a sleep physician has assessed them. Prefers custom, adjustable devices for people with sleep apnoea (based on low-quality evidence).
Sources checked 26 Oct 2026.