Every star is one night of your life
you sleep
0 onethird
nights of your life
use it
Introducing
ONETHIRD

The breakthrough after three decades of molecular science:
Melatonin-free. Non-sedative. Liberating.

Everyone f*cking sleeps now
+40min
Total Sleep
+17%
Deep Sleep
+13%
REM Sleep
1scoop
Powder, before bed

€54 total, founding price locked for life · 60-night money-back guarantee

What happens every night

Your night fails
in four places.

01Falling asleep
02Staying asleep
03Waking up
04Getting through the day

One hormone sabotages all four.

Stress loads the gun.
Cortisol pulls the trigger.

Scroll through one night and watch it happen.

One night · your local time
22:00Scroll through the night
Another wasted night.
Another day, another drama.
01

Why you can't fall asleep

22:00Phone down. Melatonin clocks in.

23:10Lights off. Brain on. Cortisol still running your day.

02

Why you don't sleep well

23:30Deep sleep window opens. Rebuild begins.

01:00Cortisol climbs. Melatonin clocks out. Deep sleep loses.

02:30REM should be here. It's not. Your brain is in overdrive.

03

Why you wake up like shit

03:18Cortisol spikes. Eyes open. Heart racing. Oh, come on...

04:00Back to sleep - light sleep only. Nothing rebuilds.

04

Why your day is fucked

06:45Your alarm clock tells you to suck its d*ck.

09:00Brain fog. Zero focus. Coffee fixes nothing. You're not tired - you're trapped.

Break this cycle.

Sleep. Real sleep. Deep sleep.
The sleep you forgot existed.

Just like these people did:

30 humans. 30 nights.
Tracked, not promised.

Our Berlin pilot. Week one, baseline. Week three, on ONE/THIRD. An Oura ring tracking every minute in between — this is the average night.

Baseline · Week 14 wake episodes
WAKE REM LIGHT DEEP
22:3000:3002:3004:3006:30
On ONE/THIRD · Week 30–1 micro-wake
WAKE REM LIGHT DEEP
22:3000:3002:3004:3006:30
"I stopped needing a second coffee. I thought that was impossible. Turns out I was just tired."
Pilot tester 04 · Product lead, 31 · Munich
"Wore a ring for a year. This is the first thing that moved my deep sleep meaningfully."
Pilot tester 11 · Endurance athlete · Copenhagen
"No hangover. I wake up before the alarm, not because of it."
Pilot tester 23 · Founder, 38 · Berlin

Internal pilot, n = 30, Berlin 2026. Self-reported & Oura tracking. Not a clinical trial. Results vary.

This is the
scientific sleep wonder
you've been dreaming of.

From closing your eyes
to owning your morning:
ONE/THIRD doesn't work like
other supplements.

That's why it doesn't fail like them.

01 / Falling asleep

Cortisol drops.

Your nervous system exhales.
You stop fighting bed.

02 / Staying asleep

No 3am wake-ups.

No shallow drift.
Deep sleep holds its ground.

03 / Waking up

Heart calm.

Eyes open because you chose to.
Not because cortisol spiked.

04 / The morning

No hangover. No fog.

You feel like yourself.
Maybe better.

How it works? Read here:

The Ingredients. Only Actives. No Filler. +
PeptiSleep®

Our patented hero ingredient. The peptide that switches cortisol off.
Only in ONE/THIRD.

250 mg
Glycine

Your body only falls asleep once its core temperature drops.
Glycine helps it drop.

4,000 mg
Magnesium Bisglycinate

The chelated form your nervous system actually absorbs.
No cheap oxide tricks.

1,000 mg120 mg elemental · 32% NRV
L-Tryptophan

The raw material your brain turns into melatonin.
Feeding the system - not overriding it.

500 mg
Lemon Balm Extract

Melissa officinalis. Calming nervous systems worldwide for over 2,000 years.
Grandma approved.

300 mg
L-Theanine

Gets you off the thought carousel and onto the sleep train.
Safe travels.

200 mg

No melatonin · No sweeteners · No proprietary blends · Independently tested · Made in Germany

This is it.
Sleep deep. Sleep fast. Sleep well.

The missing third

Tomorrow starts tonight.

Claim your third back.
27 years of your life — reserved for €10.

Early August 2026Ships from Berlin
€69 €54Founding price - locked for life
60 nightsMoney-back
500 / 500
founding pouches remaining · single pharma-grade run
Reserve — €10Ships early August 2026 · Fully refundable

€10 today. €44 when it ships.
And every order you'll ever place:
€54 instead of €69 - locked for life.

Refundable anytime before shipping. 60 nights to change your mind after delivery. Keep the pouch.

Everything you'd ask us while lying awake at 3am (aka FAQs)

How does pre-ordering work? +
€10 today reserves your founding pouch. €44 when it ships in early August 2026 - fully refundable anytime before shipping. And every order you'll ever place after that: €54 instead of €69. For life.
Why is there no melatonin in it? +
You're most likely not melatonin-deficient - you're too wired to switch off. Melatonin only tells your body it's night; it can't quiet a nervous system that's still running. ONE/THIRD can. And will. Without adding a single hormone.
So, how does ONE/THIRD actually work? +
By removing the reasons you're still awake. The actives work three angles at once: they quiet a nervous system stuck in overdrive, trigger the drop in core temperature your body reads as "time to sleep," and let your body build its own melatonin instead of borrowing it from a pill. In short: you wind down. The single most important step to a full night of sleep.
Will I feel groggy in the morning? +
No. Nothing in here sedates you. You're not knocked out - you're asleep. Deep sleeping, dreaming, regenerating. And waking up as yourself. Or better. The morning is the whole point. Tomorrow starts tonight.
How do I take it? +
Easier than falling asleep with ONE/THIRD: one scoop of powder in water, 30 minutes before bed. Then go to bed. That's all you gotta do. Make it a habit for even more impressive mornings.
When will I notice a difference? +
Falling asleep: from the first nights. Deep sleep and mornings: give it two to three weeks. That's when most of our users report the needle really starts to move.
What if it doesn't work for me? +
60 nights to change your mind after delivery. Full refund - keep the pouch. That's how sure we are.

Still awake? Reserve your pouch →