Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Glycine is a non-essential amino acid that serves several biological functions, including roles in protein synthesis, neurotransmission, and as a precursor to other important biomolecules. Its use to support the muscles body system is scientifically substantiated, though the evidence is moderate rather than robust. Glycine is a component of collagen, which constitutes a significant part of muscle connective tissue. Some research has shown that glycine supplementation can enhance muscle repair, decrease muscle wasting, and improve muscle function, particularly in situations of stress or injury. For example, studies in both animals and humans have indicated that glycine may help reduce muscle loss during aging (sarcopenia) and may support muscle regeneration following injury by modulating inflammation and oxidative stress.

However, most of the clinical evidence is preliminary, with larger and more rigorous human trials needed to draw stronger conclusions. Glycine is also sometimes included in amino acid blends marketed for muscle recovery, but its isolated effects in healthy adults are not as well established as those of branched-chain amino acids (BCAAs) or other essential amino acids.

In summary, while glycine has a plausible biological basis and some scientific backing for supporting muscle health, particularly in specific contexts like injury or aging, its direct application for muscle support in the general population is still under investigation. The current evidence supports a moderate rating for its use in this context.

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Other body systems supported by Glycine

Blood
Brain
Digestive System
Gastrointestinal Tract
Joints
Liver
Muscles
Nerves
Skin
Structural System

Products containing Glycine

We currently have no products on Vitabase that contain this ingredient.