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5 Things Nobody Tells You When Your Jaw Won't Stop Clenching — and What Actually Reaches the Muscle

Jennifer Collins
By Jennifer CollinsLast Updated Sep 5, 2026
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Read this before you buy another night guardIf you're on a medication, nothing here asks you to stop it.
Keel Unclench bottle
UnclenchNight guardMasseter Botox
Reaches The musclethe part that's clenching The teethprotects the enamel The muscleby injection
Effort 2 capsulesnightly, at home Worn nightlyevery night, for years Clinic visitevery few months
Where At homeno appointment At homeafter a dental fitting In a clinicwith a practitioner
Cost Per bottlemonthly Per guardreplaced when worn Per visitongoing

TLDR: five things nobody tells you about a clenching jaw — and what actually reaches the muscle 👇

1. It usually started with something — and whatever it was, it ends at the same muscle

For some people it was a new prescription, and the jaw followed a few weeks later. For some it was the worst year of their life. For some it came with a stimulant. For some it's been there since braces. Four different starts. One muscle doing the clenching — and nobody has told it to stop. If a medication is part of your story: nothing here asks you to stop, switch or lower it.

Four people in four rooms, each with a hand on the jaw. Four starts. One muscle.

2. Nobody told you, because it was never anyone's one job

You went to the dentist. She saw the worn teeth and made you a guard. You went to your doctor. He asked about sleep and stress and moved on. Maybe you told a therapist, who gave you breathing exercises. All three did their job. None of them looked at the muscle, because the muscle isn't their job. So you found it yourself. At 1am, on your phone, reading strangers describe your exact jaw.

Unclench is the only magnesium formula built for people who clench their jaw — not a general calm supplement, not a sleep aid, not a replacement for dental care.

Three clay doctors busy with the teeth, the mood and the anxiety, while the jaw-muscle character waves unnoticed. Every one of them did their job.

3. The science: a muscle contraction is a calcium event. Your blood test can miss it.

Every time a muscle squeezes, calcium is the signal. Magnesium is the brake. It pushes back on the calcium and lets the muscle release. Run low on magnesium and the brake goes soft. Cramps. Twitches. A jaw that stays clenched. And here's the part nobody tells you: a blood test can miss it. Less than 1% of your magnesium is in your blood. The rest is in bone and muscle, and your body will pull from there to keep the blood number looking normal. Normal blood, empty muscle. It even has a name: chronic latent magnesium deficiency. Almost no magnesium brand ever mentions it. It's the reason Unclench exists.

Where your magnesium actually is: bone 53%, cells 46%, blood under 1%. A blood test only sees the drop.

4. A night guard was never designed to reach a muscle

Your guard is doing its job. It protects the enamel, and it stopped the grinding sound that woke your partner. That's what it was built for. But look at where it sits. On the teeth. The clenching comes from a muscle higher up, in front of your ear, and no piece of plastic in your mouth reaches it. That's the half nobody has covered. Keep the guard. Give the muscle its own thing. Then the guard protects the teeth, and the muscle finally has something working on it too.

A clear night guard in front of an open mouth with an arrow to the teeth, the coral jaw muscle above. Two halves of one problem.

5. Take it for 60 days. Then decide.

Two capsules at night. That's the whole routine. Then you watch for the things you already know to look for: a morning where you don't wake up with your teeth already together, the guard you take out without a tender jaw behind it, the ache in front of your ear that stops being the first thing you notice. A muscle that's been overworked for years doesn't change in a week, so we ask for 60 days. Take it every night for 60 days. If your jaw hasn't told you anything by then, send it back and we refund you. Two months, no risk to you.

"I want to stress the fact that this is not a golden bullet… I still have bad spasms from time to time, but they're not nearly as common as before."— from a public forum thread on jaw clenching
A woman at the bathroom mirror testing her jaw, 60-day money-back guarantee seal. Your jaw is the judge.

For people who clench their jaw

For the muscle your night guard can't reach

A hand holding a bottle of Keel Unclench at the bedside. Take it for 60 days. Then decide.
CHECK AVAILABILITYTwo capsules a night · 60-day guarantee

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Whatever started the clenching, this is for the muscle that's still doing it.

The honest order of things

We'd rather tell you what to expect than promise something that isn't true.

Week 1Sleep is usually what people notice first.
Week 4A fair read on whether it's doing anything for you.
Month 2–3The jaw is slower. An overworked muscle doesn't reset overnight.
Month 3+This is your baseline. The muscle is supported, not "fixed".

The numbers this page is built on

53%of body magnesium is held in bone
46%is inside your cells
<1%is in the blood we test
24%extra benefit from B6, severe-stress subgroup only

Pickering et al., Nutrients 2020;12(12):3672. Pouteau et al., PLOS ONE 2018;13(12):e0208454 — no significant difference overall (n=264); the 24% advantage appeared only in the severe-stress subgroup (n=162, p=0.0203).

60-Day Money-Back Guarantee

A muscle that has been clenching for years doesn't change in a night. Take it every night for 60 days. If it hasn't done anything for you, send it back and we refund you.

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