Studied for falling asleep
L-Glycine
L-Glycine · An amino acid (glycine) involved in collagen synthesis and thermoregulation
An amino acid studied for sleep quality in clinical trials. Per sachet: 2000 mg.

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In plain language
What it does in your body
Glycine is the simplest amino acid, one of the building blocks of collagen.
It is also involved in thermoregulation, how the body manages its internal temperature.
It acts gently on the nervous system in the evening, without forcing you to sleep.
Natural source:
Glycine is an amino acid your body makes on its own, also found in gelatin, bone broth, meat and fish. A noticeable evening effect needs a concentrated dose, which is why we include a clean 2000 mg in the sachet.
Why l-glycine is in Corti-Glow
Why this ingredient specifically, not an alternative.
To fall asleep, your core temperature has to drop by about 1°C. Glycine supports exactly that.
Glycine is the smallest of the amino acids: a single molecule with no side chain, which is also why it dissolves so readily.
It works in synergy with the other evening ingredients in the sachet, a calm mind + a cooled body.
How it works on the body
Mechanism, step by step.
1Widens the peripheral vessels
Glycine gently dilates the blood vessels in the skin of the hands and feet. The body releases heat outward through them.
2Lowers core temperature
To fall asleep, the body's core has to cool by about 1°C. This heat release makes the transition to sleep more natural and faster.
3Calms the nervous system
Glycine acts gently on the brain in the evening, less tension at bedtime, without a “drugged” feeling.
4Supports a steadier rhythm
An easier drift-off in the evening also means less fatigue and a clearer head the next morning.
How it works with the other ingredients
7 ingredients. Each pair with a specific mechanism.
Not random supplements in one box. Every combination has a biological reason.
Combination
L-Glycine + Magnesium
+ Magnesium Bisglycinate · 670 mg
For sleep and muscle relaxation
Mechanism
Magnesium bisglycinate is actually magnesium bound to two glycine molecules, the same amino acid. So the two ingredients come from the same material: magnesium contributes to normal muscle function, while glycine is among the most-studied amino acids for evening use.
End benefit
A relaxed body and a smoother transition into sleep.
2 combinations · click to explore
This is why they aren't sold separately, one sachet, the full chain.
Why this exact dose in Corti-Glow
2000 mg, specific, not random.
- →2000 mg is a meaningful evening dose in combination with the glycine from magnesium bisglycinate.
- →Chosen for synergy with the other evening ingredients, not as a standalone sleep aid.
- →Pure L-glycine, dissolves quickly in water and has a slightly sweet taste.
Frequently asked questions
About l-glycine.
Will it knock me out like a sleeping pill?+
Why 2000 mg and not 3 g like in the studies?+
Does it have a taste?+
Works well with
The other ingredients in Corti-Glow.
For sleep and muscle relaxation
Magnesium Bisglycinate
670 mgMagnesium contributes to normal nervous system and muscle function. The bisglycinate form is chosen as gentler on the stomach than the oxide.
See detailsFor cycle and sugar cravings
Myo-Inositol
2000 mgStudied in dozens of clinical trials in women — mostly for the cycle and insulin sensitivity. 2000 mg per sachet, the dose from the studies.
See detailsThe evening can be different.
Magnesium, ashwagandha and collagen are in stock today. Our own Corti-Glow sachet is still in production.
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