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Gl
Amino Acids

Glycine

Simple amino acid supporting sleep quality and collagen synthesis.

What it is

Glycine is the simplest amino acid, serving as a neurotransmitter, collagen building block, and glutathione precursor.

How it works

Inhibitory neurotransmitter (glycine receptors); lowers core body temperature to promote sleep onset; key for collagen triple helix.

What the evidence says

Moderate evidence for improving subjective sleep quality; well-tolerated even at high doses.

Safety Notes

  • Very safe; sweet taste. Powder form preferred at 3g doses (would require many capsules).
  • clozapine: May reduce clozapine effectiveness; consult physician.

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