Glycine Boost

Pure Glycine

Heart & Brain Immune System Joints & Mobility Performance Sleep

Pure glycine powder supplement to support your nutritional routine and overall wellness, with triple certification for purity and safety.

500 g | 100 servings per container

Good manufacturing practices (GMP) Non-GMO Gluten-free Unflavored Vegan

24,95 €

Tax included.

Shipping from €3.90. Free on orders over €70 (Mainland Spain & Balearic Islands).

Receive it in 1–3 business days in Spain

Centenarian Road's glycine powder is an amino acid supplement that can form part of your daily nutritional routine. Glycine is a naturally occurring amino acid found in protein-rich foods and is one of the building blocks your body uses for various physiological processes.

With only 3-5 g per day, it provides a concentrated source of this amino acid. Its certified purity and safety ensure a reliable product, free from contaminants and unnecessary additives.

  • Athletes and active individuals who seek to optimize their rest and speed up muscle recovery after high-intensity training.
  • Adults of all ages who wish to improve sleep quality and promote overall well-being, with the confidence of a dietary supplement of high purity and certified safety.

Dissolve 1 scoop (approx. 5 g) in 200-250 ml of water or your beverage of choice, preferably in the evening or after physical activity.

Total product quantity: 500 g
Daily dose: one scoop (5 grams)
Servings per container: 100

Nutrients (daily amount):

  • Glycine — 5 g

Ingredients: Glycine.

  • Do not exceed the stated recommended daily dose.
  • Store in a cool, dry place protected from sunlight, keeping the container tightly closed and not exceeding 30 ºC.
  • Keep out of reach of young children.
  • Do not use in the case of hypersensitivity to any of the product's ingredients.
  • Food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
  1. Razak MA et al. Multifarious Beneficial Effect of Nonessential Amino Acid, Glycine: A Review. Oxid Med Cell Longev. 2017;2017:1716701.
    https://pubmed.ncbi.nlm.nih.gov
  2. Sanchez-Roman I et al. Regulation of longevity and oxidative stress by nutritional interventions: role of methionine restriction. Exp Gerontol. 2013 Oct;48(10):1030-42.
    https://pubmed.ncbi.nlm.nih.gov/
  3. Kumar P et al. Glycine and N-acetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition: Results of a pilot clinical trial. Clin Transl Med. 2021 Mar;11(3):e372.
    https://pubmed.ncbi.nlm.nih.gov
  4. Bannai M et al. The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers. Front Neurol. 2012 Apr 18;3:61.
    https://pubmed.ncbi.nlm.nih.gov
  5. Trommelen J et al. Casein Ingestion Does Not Increase Muscle Connective Tissue Protein Synthesis Rates. Med Sci Sports Exerc. 2020 Sep;52(9):1983-1991.
    https://pubmed.ncbi.nlm.nih.gov
Glicina en polvo 500g, suplemento ideal para mejorar el sueño, la recuperación muscular y reducir la ansiedad.

Glycine Boost

24,95 €

24,95 €

This product has triple certification

 Informed Sport

Certification that guarantees each batch has been tested for over 250 banned substances and that the product is manufactured under strict quality standards.

View certificate

Lab Guaranteed Composition

Ensures that the declared composition is accurate through external laboratory analyses that verify each ingredient used.

View certificate

Main Pollutants Free

Confirms the absence of main contaminants through external laboratory analyses, ensuring a product that is safe for consumption.

View certificate
Productos de Centenarian Road, incluyendo glicina, estrés, magnesio y sleep, de marcas de suplementos certificadas, formulados para mejorar el bienestar general.

What is the importance of glycine?

Glycine is an essential amino acid for your body that acts as a precursor to key molecules such as glutathione (your main endogenous antioxidant), creatine and other vital metabolites. Although your body can synthesize it, natural production is not sufficient to cover all your needs, especially considering that modern diet has drastically reduced the consumption of sources rich in glycine such as bones, skin or cartilage, altering the glycine:methionine ratio in your body.

Beyond being a simple amino acid, maintaining optimal glycine levels also helps improve sleep quality, enhance muscle recovery and strengthen your antioxidant capacity, especially when plasma glycine levels decrease after exercise due to its increased utilization during collagen synthesis. At Centenarian Road we understand glycine not only as a supplement for athletes, but as part of a comprehensive health, recovery and longevity strategy.

That's why we offer Glycine Boost with triple certification of purity and safety: Informed Sport (free of more than 250 banned substances), Lab Guaranteed Composition (composition verified by external laboratories) and Main Pollutants Free (without contaminants). Each batch is analyzed and certified to guarantee that you receive a product of 100% pure glycine, without additives or unwanted substances.

Centenarian Road vs other brands

What sets us apart

Glycine Boost
Others - Athletes
Others - General
Informed Sport
 Lab Guaranteed Composition
Main Pollutants Free
Tennis supplements from Centenarian Road, designed for performance enhancement, joint health support, muscle recovery, and anti-aging benefits for active athletes.

Why choose Centenarian Road's Glycine Boost?

  • Solid scientific evidence: pure glycine is the amino acid with the greatest support in clinical studies to improve subjective sleep quality, reduce daytime drowsiness and enhance muscle recovery by acting as a precursor to glutathione (main endogenous antioxidant) and essential component for post-exercise collagen synthesis.
  • Certified maximum purity: 100% pure glycine without additives, sweeteners or excipients, which allows correcting the glycine:methionine ratio altered by modern diet (reduction in consumption of bones, skin and tendons), providing a proven protective effect on oxidative stress and mitochondrial function.
  • Proven safety: triple certification that includes the Informed Sport seal (free of more than 250 banned substances), Lab Guaranteed Composition (composition verified by external laboratories) and Main Pollutants Free (without contaminants), ideal for professional and semi-professional athletes who undergo anti-doping controls.
  • Total confidence: essential amino acid with multiple applications (sleep, antioxidant, muscle recovery), with external purity analysis and complete traceability, so you know exactly what you're taking. The result is a quality and reliable glycine at all times.

Resolve your doubts before buying glycine.

Glycine is a simple amino acid involved in many core functions in the body. It is a major building block of collagen, which supports skin, bones, tendons, and ligaments. It also works as a neurotransmitter and helps with fat metabolism and the use of fat-soluble vitamins. For that reason, a high quality glycine supplement is often used for sleep support, recovery, and general wellness.

Human studies suggest that taking around 3 g of glycine before bed may improve sleep quality, next-day alertness, and reduce fatigue. That is why many people choose a glycine powder supplement as part of their evening routine. Centenarian Road’s formula is a pure glycine powder with no unnecessary fillers, designed for people looking for a contamination-free powder recovery option that also fits sleep-focused routines.

If your goal is better sleep, the most common research-based timing is 30 to 60 minutes before bedtime, with around 3 g per day. On the Centenarian Road product page, the recommended serving is 1 scoop = 5 g, mixed with 200–250 ml of water or your drink of choice, preferably before sleep or after physical activity. This makes it easy to adjust the serving depending on your goal.

For users asking when to take glycine, the answer depends on context. The best time to take glycine powder is usually before bed if sleep is the priority, or after training if the focus is glycine muscle recovery. Research cited by Sleep Foundation notes that 3 g of glycine used in sleep studies did not cause side effects, while very high doses may cause nausea. That is why starting with a moderate amount is usually the best approach.

There are many glycine brands on the market, but not all products offer the same level of purity or traceability. Centenarian Road positions this product as a glycine supplement powder with a single ingredient: glycine. No flavoring overload, no unnecessary additives, and no blended formula that makes dosing harder. For people searching for a high-quality glycine supplement or a reliable glycine supplement Spain option, that simplicity matters.

This product is also designed as an Informed Sport glycine supplement, which is especially relevant for athletes and active users who want a cleaner profile. Compared with capsules or mixed recovery formulas, this pro glycine powder format gives more flexibility: you can use it before bed, after exercise, or as part of a broader joint and skin support routine. If your goal is to find a glycine powder supplement brand focused on purity, sleep support, and recovery, this format makes practical sense.