Glycine is the simplest amino acid and one of the most abundant in the human body. It plays important roles in collagen formation, sleep quality, and healthy nervous system function.
Our Glycine Powder is USP Grade and sourced from the USA. It is highly pure and contains no fillers or additives. Glycine is commonly used to support restful sleep, healthy skin, hair, and nails through its role in collagen production, and to support muscle recovery.
Many people take glycine in the evening because of its calming properties and its ability to support deeper, more restorative sleep.
Available Sizes: 250 g = 250 servings | 1000 g = 1000 servings
As a dietary supplement, take 1 level scoop (approximately 1 gram) with water or another beverage, 1 to 3 times daily, or as directed by a healthcare professional.
Serving Size: 1 level scoop (1 gram)
Servings Per Container: Varies by size
Amount Per Serving:
Glycine — 1 g
*Daily Value not established.
• USP Grade
• Sourced from USA
• Tested for purity and potency
• 99.9% pure
• No fillers or additives
• Packaged in a bag with scoop included
Glycine is the smallest and one of the most abundant amino acids in the human body. It functions as both a building block for proteins (especially collagen) and as an inhibitory neurotransmitter in the central nervous system.
Key Research Findings:
- Glycine and sleep quality
Inagawa, K. et al. (2006). Subjective effects of glycine ingestion before bedtime on sleep quality. Sleep and Biological Rhythms, 4(1), 75–77.
This study found that glycine taken before bedtime improved subjective sleep quality and reduced daytime fatigue.
- Glycine and collagen synthesis
de Paz-Lugo, P. et al. (2018). High glycine concentration increases collagen synthesis by articular chondrocytes. Connective Tissue Research, 59(5), 458–464.
Research has shown that glycine availability can influence collagen production in the body.
- Glycine as an inhibitory neurotransmitter
Betz, H. & Laube, B. (2006). Glycine receptors: recent insights into their structural organization and functional diversity. Journal of Neurochemistry, 97(6), 1600–1610.
Glycine acts as an important inhibitory neurotransmitter, helping to regulate nerve activity in the brain and spinal cord.
- Glycine and metabolic health
Yan-Do, R. & MacDonald, P.E. (2017). Impaired “Glycine”-minergic signaling in the nucleus tractus solitarii of spontaneously hypertensive rats. Hypertension, 69(5), 869–877.
Studies have explored glycine’s role in metabolic regulation and blood pressure control.
- Glycine and neuroprotection
Wang, W. et al. (2016). Glycine and N-acetylcysteine supplementation improves multiple cellular functions in older adults. JCI Insight, 1(15), e85915.
Research has investigated glycine’s potential protective effects on cellular health and aging.
- Glycine and anti-inflammatory effects
Zhong, Z. et al. (2003). Glycine prevents apoptosis and improves survival in models of shock and sepsis. Critical Care Medicine, 31(2), 528–536.
Animal studies have shown glycine may help reduce inflammation and protect against certain types of cellular stress.
Metabolic Research Perspectives:
Within bioenergetic and metabolic research traditions, glycine is valued for its dual role in structural integrity (via collagen) and nervous system regulation. Its ability to act as an inhibitory neurotransmitter is often highlighted for supporting calm, restorative sleep, and balanced nervous system function. Additionally, its contribution to collagen formation is recognized as important for maintaining tissue resilience and overall structural health.
Note: This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
Consult your healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition. Keep out of reach of children. Do not use if the bag is damaged or the seal is broken.
*Statements made on this website have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
