Skip to main content
SupplementScience

Types of Glycine: Forms & Bioavailability

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Glycine PowderHighSleep support — dissolves easily in water, has a mildly sweet taste, cost-effective for the 3g dose
Glycine CapsulesHighConvenience — though multiple capsules needed to reach the 3g clinical dose (typically 6 x 500mg)

Glycine Powder

Bioavailability: High. Best for: Sleep support — dissolves easily in water, has a mildly sweet taste, cost-effective for the 3g dose.

Glycine Capsules

Bioavailability: High. Best for: Convenience — though multiple capsules needed to reach the 3g clinical dose (typically 6 x 500mg).

Full Glycine Guide

References

  1. (). The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers. Frontiers in Neurology. DOI
  2. (). Subjective effects of glycine ingestion before bedtime on sleep quality. Sleep and Biological Rhythms. DOI
  3. (). The sleep-promoting and hypothermic effects of glycine are mediated by NMDA receptors in the suprachiasmatic nucleus. Neuropsychopharmacology. DOI
  4. (). Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes. Sleep and Biological Rhythms. DOI