The L-glycine & L-tryptophan dietary supplement is a powdered preparation containing protein amino acids: L-glycine with L-tryptophan, without additives, enhancers and preservatives.

L-Glycine and L-Tryptophan Complex is a combination of amino acids that support the body’s nighttime rest through signaling and structural support . The formula provides L-tryptophan , essential for the production of melatonin and serotonin, which send biological signals for relaxation, and L-glycine , the main structural component for collagen synthesis. While tryptophan induces the nervous system into a state of rest, glycine provides the physical raw material for rebuilding tissues and epithelial barriers. This division of roles ensures optimal availability of the elements necessary for simultaneous calm and natural nighttime repair processes.

L-glycine:

• L-glycine constitutes as much as one third (33%) of all amino acids that build the structure of collagen ,
• L-glycine is a natural building block of skin, joints, tendons and cartilage ,
• L-glycine in the body is an essential element for the production of glutathione, the main cellular antioxidant,
• L-glycine is used by the body as a substrate for the natural production of creatine ,
• L-glycine occurs naturally in the structures of the brain and nervous system,
• L-glycine is involved in the formation of heme, the component responsible for the transport of oxygen in red blood cells ,
• L-glycine is one of the basic amino acids from which the human body builds its own proteins .

L-tryptophan:

• L-tryptophan is an exogenous (essential) amino acid , which means that the body cannot synthesize it itself and must be supplied from outside,
• L-tryptophan is a direct precursor to the production of serotonin , commonly called the “happiness hormone”,
• L-tryptophan in the natural biochemical cycle of the body takes part in the synthesis of melatonin , a compound responsible for regulating the circadian rhythm,
• L-tryptophan is a key substrate used by the body to produce niacin (vitamin B3) ,
• L-tryptophan is one of the basic structural elements from which the body builds body and muscle proteins ,
• L-tryptophan occurs naturally in the nervous system and in the cells of the gastrointestinal mucosa.

Ingredients: L-glycine, L-tryptophan

Gluten-free

Net weight: 144 g.

Recommended daily dose : 3200 mg (equivalent to 3 scoops included in the package).

Preferred intake : should be consumed 3-60 minutes before bedtime or during a dinner containing complex carbohydrates.

Do not exceed the recommended daily dose. To maintain good health, a varied diet and a healthy lifestyle are recommended. Dietary supplements should not be used as a substitute for a varied diet. This product is recommended for adults.

Warning: Pregnant and breastfeeding women should consult a doctor before using the product.

Organoleptic properties:

Storage: The L-glycine & L-tryptophan dietary supplement should be stored out of direct sunlight, at a temperature of 5-25 ^° C, in the original packaging, out of reach of small children.

Production batch number/ Best before end – information can be found on the individual label (left side of the label).

Batch tests performed:

• microbiology, presence of: listeria, staphylococcus, escherichia coli and coliforms, salmonella , mold, yeast, total number of microorganisms,
• presence of pyrrolizidine and tropane alkaloids,
• heavy metals (arsenic, cadmium, lead, mercury),
• ethylene oxide and 2-chloroethanol,
• gluten content.

The tests were carried out in the independent, accredited GBA Polska Laboratory – Accreditation Certificate No. AB 1095.

Link to research

L-glycine

The L-glycine contained in this product is a non-essential amino acid with a simple structural structure , constituting over one-third of all the amino acids that make up human collagen. Thanks to its minimal molecular weight, this key building block is rapidly absorbed in the digestive tract and directly distributed to cells throughout the body.

In target tissues, L-glycine is used by fibroblasts as a basic raw material for the biosynthesis of new collagen chains and structural proteins. Additionally, within cells, this amino acid participates in the metabolic pathway for the formation of glutathione , a key natural antioxidant that protects cells from oxidative stress.

L-tryptophan

The L-tryptophan contained in this product is an organic, exogenous amino acid , meaning it is not synthesized by the body and must be supplied externally. After ingestion, it is effectively absorbed in the small intestine and then transported through the bloodstream, where it crosses the blood-brain barrier as a free amino acid, becoming available to the nervous system.

In target tissues, L-tryptophan serves as an essential biochemical substrate and precursor for the synthesis of important signaling compounds, including serotonin. During further stages of nocturnal metabolism, the resulting serotonin is naturally converted to melatonin , which is directly responsible for the biochemical regulation of the body’s circadian rhythm of sleep and wakefulness .