SnoreLessNow Somnofit-S - FDA-Cleared Anti-Snore Mouthguard

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An FDA-cleared, Swiss-made anti-snore mouthguard that holds the jaw slightly forward to open the airway and reduce snoring, with a boil-and-bite custom fit and adjustable straps that keep the jaw mobile enough to talk and sip water while you wear it.

Snoring has a simple mechanical cause for many people: as the jaw and tongue relax back during sleep, they narrow the airway and the soft tissue vibrates. A mandibular advancement device (MAD) like the Somnofit-S addresses that by holding the lower jaw slightly forward, which opens the airway. It is the same principle behind the custom appliances dentists fit, in a self-molded form at a fraction of the price.

The Somnofit-S is the US version of the Somnofit-S sold across Europe, made by the Swiss manufacturer OscimedSA from biomedical polymers that are BPA, phthalate, and latex-free. SnoreLessNow states it is an FDA-cleared Class II device intended to reduce snoring in adults. You fit it yourself with the boil-and-bite method, and the patented adjustable straps let the jaw move enough to talk and drink without the device slipping out, which is the most common complaint with rigid one-piece mouthguards. It holds a 4.82 out of 5 across 270 reviews as of July 2026, and SnoreLessNow backs it with a 120-night money-back guarantee.

On the evidence: SnoreLessNow cites a study published in the journal Sleep Science reporting that the Somnofit reduced snoring, improved oxygen saturation, and lowered daytime sleepiness. Treat that as the manufacturer's cited evidence rather than our own testing, and note that individual results vary.

Where it gives ground: it is still a mouthguard. Mandibular advancement devices commonly cause an adjustment period with jaw or tooth soreness and extra morning salivation, and a boil-and-bite fit is a do-it-yourself mold rather than a dental impression. At around $150 it is premium for an over-the-counter anti-snore device, though far below a custom dental appliance.

The most important caveat: this is a snoring device, not a sleep apnea treatment. Its own FDA labeling states it is not intended to diagnose, treat, cure, or prevent obstructive sleep apnea or any medical condition. Loud snoring can be a symptom of sleep apnea, so if you snore heavily, gasp or stop breathing in your sleep, or wake unrefreshed, talk to a clinician about a sleep study before relying on any anti-snore gadget.

The buyer this is built for: an adult who snores, has ruled out sleep apnea with a clinician, and wants a comfortable, adjustable, FDA-cleared mouthguard that still lets the jaw move. The buyer who should skip: anyone who suspects sleep apnea, cannot tolerate anything in the mouth overnight, or wants a device-free approach first.

Specifications