What it is: Glycine is a naturally occurring non-essential amino acid found in the body, where it is involved in building proteins and acting as a neurotransmitter in the central nervous system.
What it does: Glycine supports calming effects in the brain and helps regulate signals that lead to relaxation and improved sleep quality. It also contributes to collagen production, muscle repair, and detoxification pathways.
How it is used: Glycine is commonly used in supplements for sleep support, stress relief, athletic recovery, and overall wellness.
Natural sources and supplement forms: Glycine naturally occurs in protein-rich foods like meat, fish, dairy, and gelatin. In supplements, it is usually found as pure glycine powder, capsules, or tablets.
Why it appears in supplement formulas: Brands include glycine to support restful sleep, promote muscle recovery, and help buffer the nervous system against stress by promoting relaxation.
What to know before use: Glycine is generally well tolerated, but people with certain metabolic or neurological conditions should consult a healthcare professional before use.
Ingredient guide
