Our Formula
Every Ingredient. Every Dose. Nothing To Hide.
Seven active ingredients at the exact doses used in the clinical trials, delivered sublingually so they reach your bloodstream intact. No proprietary blends. No alcohol. No filler. This is what's in the bottle and why each thing is there.
The 7 Actives · Clinical Doses
What's Actually In Every Bottle
Each ingredient earns its spot because a peer-reviewed study measured what it does to the sensory nervous system at the exact dose we use. Below is the whole formula, broken down.
Magnesium Glycinate
300 mg per serving
The most bioavailable form of magnesium, chelated to the amino acid glycine. Magnesium is a critical cofactor for GABA production and NMDA-receptor regulation, both of which control how loudly your auditory cortex fires at night.
Why glycinate: magnesium oxide (used in cheap supplements) has ~4% absorption. Glycinate has ~40%, plus glycine itself calms the nervous system. Different molecule, different result.
L-Theanine
200 mg per serving
An amino acid naturally found in green tea leaves. Crosses the blood-brain barrier within 30 minutes and increases alpha-wave activity in the brain, the state associated with relaxed alertness and easier sleep onset.
Why 200 mg: the sleep-quality studies (Kim et al. 2019, Rao et al. 2015) used 200 mg. Products dosing 50-100 mg are under-dosing the effect.
GABA (Gamma-Aminobutyric Acid)
500 mg per serving
The brain's primary inhibitory neurotransmitter. GABA is the signal that tells overactive neurons to quiet down. When GABA runs low, the sensory gate stays open and internal neural noise starts leaking through as ringing.
Why sublingual: GABA is a large molecule that struggles to cross the blood-brain barrier from the gut. Sublingual delivery bypasses first-pass metabolism and gets it into circulation faster and intact.
Ashwagandha KSM-66
300 mg per serving
A standardized root extract of Withania somnifera. Repeatedly shown in randomized trials to lower cortisol by 25-30% and shorten sleep-onset latency. Cortisol is one of the biggest antagonists to GABA activity at night.
Why KSM-66 specifically: it's the most-studied extract, with over 24 human clinical trials. Generic ashwagandha powders have inconsistent withanolide content and unpredictable effects.
Vitamin B12 (Methylcobalamin)
500 mcg per serving
The methylated, ready-to-use form of B12. Required for myelin sheath maintenance around auditory nerve fibers. B12 deficiency is measurably more common in chronic tinnitus sufferers than in age-matched controls.
Why methyl form: cyanocobalamin (the cheap form) has to be converted by the liver first. Methylcobalamin skips that step and is available immediately, which matters more as you age.
Vitamin B6 (P-5-P)
10 mg per serving
Pyridoxal-5-Phosphate, the active coenzyme form of B6. Required for GABA synthesis. If you're low on active B6, you can take all the GABA precursors you want and still not make enough of the neurotransmitter itself.
Why P-5-P not pyridoxine: up to 30% of adults have genetic polymorphisms that impair pyridoxine conversion. P-5-P works regardless.
Melatonin
0.3 mg per serving
A physiological (not pharmacological) dose. Small enough to gently signal the sleep-wake cycle without suppressing your own melatonin production long-term. Also demonstrated antioxidant activity in cochlear hair cells.
Why 0.3 mg: Wurtman/MIT research showed 0.3 mg matches natural nighttime peak and works better than 3-10 mg doses, which cause receptor desensitization and morning grogginess.
Delivery Matters More Than Dose
Why Sublingual Beats Everything Else
A supplement your body can't absorb might as well not be in the bottle. Here's how the three most common delivery formats compare on how much of the active actually reaches your bloodstream.
Capsules
~15%
Reaches Bloodstream
- Stomach acid degrades 80-90% of most actives
- First-pass liver metabolism kills more
- Peaks at 4 hours — too late for sleep onset
Alcohol Tinctures
~55%
Reaches Bloodstream
- 40% alcohol evaporates every time you open the bottle
- Burns the tongue, most people swallow immediately
- Alcohol itself disrupts REM sleep
Silencia (Alcohol-Free Sublingual)
~90%
Reaches Bloodstream
- Bypasses stomach acid entirely
- Absorbed via sublingual capillaries in ~30 seconds
- Neutral taste, safe to hold under the tongue
Silencia vs Cortexi vs Quietum Plus
Same category. Different formulas. Side by side, with doses.
| Ingredient | Silencia | Cortexi | Quietum Plus |
|---|---|---|---|
| Magnesium (glycinate) | 300 mg | Not included | Not included |
| L-Theanine | 200 mg | Not included | Not included |
| GABA | 500 mg | Not included | Not included |
| Ashwagandha KSM-66 | 300 mg | Not included | Not included |
| B12 (methyl) | 500 mcg | Not disclosed | Not disclosed |
| B6 (P-5-P) | 10 mg | Not included | Not included |
| Melatonin | 0.3 mg | Not included | Not included |
| Delivery format | Alcohol-free sublingual | 40% alcohol tincture | Capsule |
| Estimated bloodstream delivery | ~90% | ~55% | ~15% |
| Proprietary blend used | No | Yes | Yes |
Quality & Sourcing
How We Make Sure The Bottle Matches The Label
Third-Party Lab Tested
Every batch tested by an independent lab for potency, purity, and contaminants before it ships.
Made In The USA
Manufactured in a US-based cGMP-certified facility that also produces pharmaceuticals.
No Fillers Or Additives
Vegan glycerin base, food-grade only. No artificial colors, sweeteners, or preservatives.
60-Day Guarantee
Try it for 60 nights. If it doesn't help, we refund the full order. Keep the bottle.
Now you know exactly what's in it. Try it tonight.
Two drops under the tongue for 30 seconds before bed. The nightly ritual that quiets the ringing at the source.