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SupplementEmergingAmino Acid

Glycine

Half-life

~0

What is Glycine?

Conditionally essential amino acid often used for sleep quality and collagen synthesis support.

How Glycine works

Acts as an inhibitory neurotransmitter and NMDA co-agonist while lowering core body temperature to support sleep onset.

Benefits & uses

  • Improves sleep quality
  • Supports collagen synthesis
  • Calming
  • Antioxidant (glutathione precursor)

Common uses: Sleep, collagen support, calm, recovery.

RecoveryLongevity

Glycine dosage

Typical dose
3 g before bed (for sleep)

Glycine half-life

~0.5-1 hour

Glycine side effects

  • Very well tolerated
  • Mild GI upset at high doses
  • May cause morning grogginess in sensitive users

Track Glycine in Protokol.

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More Amino Acid

For research and educational purposes only. This page is not medical advice and is not a recommendation to use any compound. Many compounds listed are not approved for human use, and some are prescription-only or controlled in your jurisdiction. Dosing figures are reference or observational reports. Talk to a qualified healthcare provider before starting, stopping, or changing anything. Protokol is for tracking purposes only.