It is the smallest of the amino acids and, paradoxically, one of the most active behind the scenes. Glycine goes into making collagen, glutathione and creatine, and research is looking at it closely for sleep. Its name comes from the Greek glykys, "sweet", and that is fair enough: you take it in the evening, without fanfare, and it fits quietly into a bedtime ritual.
Here is what we know about glycine, what it can bring to your sleep, your skin and your longevity, and which SuperKure products contain it.
What is glycine?
Glycine is an amino acid, that is, one of the elementary building blocks of proteins. Your body can make it itself, but not always in sufficient quantity, which explains the growing interest in dietary intake and supplements.
Its small size lets it slip in everywhere: into the structure of collagen, into the making of glutathione, one of the body's major antioxidants, and into that of creatine, very popular among women interested in energy and mental clarity. It also acts as a messenger in the nervous system, which explains its interest for sleep.
Which foods are richest in glycine?
Bone broth, gelatine and cuts rich in skin and cartilage (poultry, fish)
Meat, fish and seafood
Soy and pulses (chickpeas, lentils, black beans)
Pumpkin seeds, walnuts and almonds
Spirulina
A well-built plant-based diet provides some too, but less than collagen-rich animal products. For an entirely plant-based approach to collagen, our feature vegan collagen: does it really exist takes stock.
Glycine and sleep: a promising line of research
This is why it is talked about so much. In the brain, glycine acts as a so-called inhibitory chemical messenger: it helps neurons turn the volume down, a feeling of calm that accompanies falling asleep.
One notable fact: a Japanese study published in 2007 in the journal Sleep and Biological Rhythms followed volunteers whose sleep was unsatisfactory. After 3 g of glycine taken before bedtime, they reported better sleep quality and faster sleep onset. Since then, research has multiplied, and glycine has become one of the most closely followed leads in evening rituals.
The SuperKure tip: think of glycine as a ritual, not a reflex. A fixed time, a screen switched off, a hot drink: it is the regularity of the gesture that makes the routine, far more than the product alone.
Glycine and collagen: the skin duo
Nearly a third of the amino acids in collagen are glycine. In other words, it is everywhere in this structural protein, which gives skin, hair, nails and joints their hold.
An ultra-pure marine collagen from wild cod skin, with no additives, at 10 g a day (about 2 scoops) in a coffee or tea. A 300 g jar covers about 30 servings.
Glycine, glutathione and creatine: allies of longevity
Glycine is one of the three amino acids the body needs to make glutathione, a natural antioxidant central to cell protection. To understand what it is and how to choose its form, head to our liposomal glutathione guide.
It also takes part in the synthesis of creatine, the molecule of muscle and brain energy. Our feature creatine for women explains why it is finally leaving the gym. As for protein, how much to eat after 35 is a question that directly joins that of amino acids.
The SuperKure products that contain glycine
There is no pure glycine powder in our selection for now: you find it in formulas where it works in synergy with other evening and beauty actives. Here is where, for the moments when you want to slow down, sleep or care for your skin.
A liquid elixir in 15 ml sachets, to take in the evening about 30 minutes before bedtime. It contains L-glycine with GABA, L-theanine, magnesium, taurine and spermidine, in a tart cherry juice. The brand imagines it as a night-time beauty ritual: skin, hair and sleep brought together in a single gesture. Formulas containing 5-HTP call for medical advice if you are on antidepressant treatment.
Beauty Sleep, Shore Magic: the collagen you drink in the evening
A wild cod marine collagen, naturally rich in glycine, combined with seawater magnesium, L-theanine, acerola vitamin C and bamboo silica. One tablespoon in 180 to 240 ml of water, 1 to 2 hours before bedtime, for 14 servings per jar. The idea is simple: make bedtime a beauty moment too.
Liposomal Magnesium Complex, Cymbiotika: glycine bound to magnesium
Three forms of magnesium in a liposomal sachet, including bisglycinate, that is, magnesium bound to two glycine molecules, a form renowned for its gentleness. 28 sachets of 10 ml, vanilla almond flavour, to take at any time of day. Magnesium contributes to the reduction of tiredness and fatigue and to the normal function of the nervous system.
For every bedtime reference, the sleep collection brings together the whole selection.
How to take glycine
At what dose, and when?
In sleep studies: 3 g of glycine taken before bedtime, the order of magnitude most often cited.
The right time: in the evening, 30 to 60 minutes before going to sleep, somewhere quiet.
With our formulas: follow the dose indicated on each product, as glycine is combined there with other actives.
Over time: think in terms of a course of several weeks, and add regular sleep hygiene to it.
A transition period such as menopause often disrupts sleep: our feature food supplements for menopause is a good starting point.
Your goal
Our selection
Format
A complete evening ritual
Calm (Beauty), Agent Nateur
Liquid sachet
Sleep and beauty, with collagen
Beauty Sleep, Shore Magic
Powder to dilute
A gentle magnesium
Liposomal Magnesium Complex, Cymbiotika
Liposomal sachet
Support the skin with marine collagen
Premium Marine Collagen, Shore Magic
Powder
FAQ - The most frequently asked questions about glycine
What is glycine used for?
Glycine is an amino acid that goes into making collagen, glutathione and creatine. It also acts as a messenger in the nervous system, and research is exploring its role in sleep quality.
What are the benefits of glycine for sleep?
Research is looking at glycine for falling asleep and perceived sleep quality. In a Japanese study, volunteers who took 3 g before bedtime reported better sleep. It is a promising and actively studied line of research.
When should you take glycine?
In the evening, 30 to 60 minutes before bedtime. For SuperKure formulas, follow the directions for each product.
Can you take glycine every day?
Glycine is an amino acid naturally present in the diet. For any prolonged course or if you are on treatment, ask a healthcare professional for advice, particularly if you take an antipsychotic.
Which foods are rich in glycine?
Bone broth, gelatine, meat, fish, poultry with the skin, but also soy, pulses, pumpkin seeds and walnuts.
What is the difference between glycine and collagen?
Collagen is a structural protein, and glycine is one of its amino acids, present in very large quantity. Taking marine collagen therefore also provides glycine.
In summary
Glycine is a small amino acid with big ambitions: more serenity in the evening, support for the skin via collagen and a place in the workings of longevity. At SuperKure, you find it in an evening ritual, a night-time collagen, a gentle magnesium and all our marine collagens. Explore the sleep collection and build yours.
Food supplement. Not a substitute for a varied, balanced diet and a healthy lifestyle. Not recommended for pregnant or breastfeeding women without medical advice. Does not replace medical treatment. Keep out of the reach of children.
France
Glycine: Benefits for Sleep, Skin and Longevity
It is the smallest of the amino acids and, paradoxically, one of the most active behind the scenes. Glycine goes into making collagen, glutathione and creatine, and research is looking at it closely for sleep. Its name comes from the Greek glykys, "sweet", and that is fair enough: you take it in the evening, without fanfare, and it fits quietly into a bedtime ritual.
Here is what we know about glycine, what it can bring to your sleep, your skin and your longevity, and which SuperKure products contain it.
What is glycine?
Glycine is an amino acid, that is, one of the elementary building blocks of proteins. Your body can make it itself, but not always in sufficient quantity, which explains the growing interest in dietary intake and supplements.
Its small size lets it slip in everywhere: into the structure of collagen, into the making of glutathione, one of the body's major antioxidants, and into that of creatine, very popular among women interested in energy and mental clarity. It also acts as a messenger in the nervous system, which explains its interest for sleep.
Which foods are richest in glycine?
A well-built plant-based diet provides some too, but less than collagen-rich animal products. For an entirely plant-based approach to collagen, our feature vegan collagen: does it really exist takes stock.
Glycine and sleep: a promising line of research
This is why it is talked about so much. In the brain, glycine acts as a so-called inhibitory chemical messenger: it helps neurons turn the volume down, a feeling of calm that accompanies falling asleep.
One notable fact: a Japanese study published in 2007 in the journal Sleep and Biological Rhythms followed volunteers whose sleep was unsatisfactory. After 3 g of glycine taken before bedtime, they reported better sleep quality and faster sleep onset. Since then, research has multiplied, and glycine has become one of the most closely followed leads in evening rituals.
The appeal of this lead also lies in the fact that it fits into a global approach. To build a real evening routine, our features food supplements for sleep and sleep, the pillar of anti-ageing give you the framework. Other frequent evening allies: GABA and liposomal magnesium.
The SuperKure tip: think of glycine as a ritual, not a reflex. A fixed time, a screen switched off, a hot drink: it is the regularity of the gesture that makes the routine, far more than the product alone.
Glycine and collagen: the skin duo
Nearly a third of the amino acids in collagen are glycine. In other words, it is everywhere in this structural protein, which gives skin, hair, nails and joints their hold.
This is why marine collagens are naturally rich in glycine. To compare sources, our marine vs bovine collagen guide and why take collagen detail the forms, the doses and the expected results. And since vitamin C supports the making of collagen, the feature should you take vitamin C with your collagen? completes the picture.
An ultra-pure marine collagen from wild cod skin, with no additives, at 10 g a day (about 2 scoops) in a coffee or tea. A 300 g jar covers about 30 servings.
Glycine, glutathione and creatine: allies of longevity
Glycine is one of the three amino acids the body needs to make glutathione, a natural antioxidant central to cell protection. To understand what it is and how to choose its form, head to our liposomal glutathione guide.
It also takes part in the synthesis of creatine, the molecule of muscle and brain energy. Our feature creatine for women explains why it is finally leaving the gym. As for protein, how much to eat after 35 is a question that directly joins that of amino acids.
The SuperKure products that contain glycine
There is no pure glycine powder in our selection for now: you find it in formulas where it works in synergy with other evening and beauty actives. Here is where, for the moments when you want to slow down, sleep or care for your skin.
Calm (Beauty), Agent Nateur: the evening sachet
A liquid elixir in 15 ml sachets, to take in the evening about 30 minutes before bedtime. It contains L-glycine with GABA, L-theanine, magnesium, taurine and spermidine, in a tart cherry juice. The brand imagines it as a night-time beauty ritual: skin, hair and sleep brought together in a single gesture. Formulas containing 5-HTP call for medical advice if you are on antidepressant treatment.
Beauty Sleep, Shore Magic: the collagen you drink in the evening
A wild cod marine collagen, naturally rich in glycine, combined with seawater magnesium, L-theanine, acerola vitamin C and bamboo silica. One tablespoon in 180 to 240 ml of water, 1 to 2 hours before bedtime, for 14 servings per jar. The idea is simple: make bedtime a beauty moment too.
Liposomal Magnesium Complex, Cymbiotika: glycine bound to magnesium
Three forms of magnesium in a liposomal sachet, including bisglycinate, that is, magnesium bound to two glycine molecules, a form renowned for its gentleness. 28 sachets of 10 ml, vanilla almond flavour, to take at any time of day. Magnesium contributes to the reduction of tiredness and fatigue and to the normal function of the nervous system.
SuperKure marine collagens
All marine collagens are naturally rich in glycine. Browse the whole collagen collection, notably Zooki's Super Strength Collagen, WelleCo's The Collagen Elixir, Agent Nateur's Holi (Mane) Marine Collagen or Kiki Health's Pure Marine Collagen Powder.
For every bedtime reference, the sleep collection brings together the whole selection.
How to take glycine
At what dose, and when?
A transition period such as menopause often disrupts sleep: our feature food supplements for menopause is a good starting point.
FAQ - The most frequently asked questions about glycine
What is glycine used for?
Glycine is an amino acid that goes into making collagen, glutathione and creatine. It also acts as a messenger in the nervous system, and research is exploring its role in sleep quality.
What are the benefits of glycine for sleep?
Research is looking at glycine for falling asleep and perceived sleep quality. In a Japanese study, volunteers who took 3 g before bedtime reported better sleep. It is a promising and actively studied line of research.
When should you take glycine?
In the evening, 30 to 60 minutes before bedtime. For SuperKure formulas, follow the directions for each product.
Can you take glycine every day?
Glycine is an amino acid naturally present in the diet. For any prolonged course or if you are on treatment, ask a healthcare professional for advice, particularly if you take an antipsychotic.
Which foods are rich in glycine?
Bone broth, gelatine, meat, fish, poultry with the skin, but also soy, pulses, pumpkin seeds and walnuts.
What is the difference between glycine and collagen?
Collagen is a structural protein, and glycine is one of its amino acids, present in very large quantity. Taking marine collagen therefore also provides glycine.
In summary
Glycine is a small amino acid with big ambitions: more serenity in the evening, support for the skin via collagen and a place in the workings of longevity. At SuperKure, you find it in an evening ritual, a night-time collagen, a gentle magnesium and all our marine collagens. Explore the sleep collection and build yours.
Food supplement. Not a substitute for a varied, balanced diet and a healthy lifestyle. Not recommended for pregnant or breastfeeding women without medical advice. Does not replace medical treatment. Keep out of the reach of children.