Glycine
An amino acid that modulates NMDA receptors and may reduce sleep latency.
2
Claims
6
Human RCTs
89
Avg Score
91/100Amino Acids
Glycine reduces sleep latency in human RCTs
Glycine (3g before bed) significantly reduces sleep onset latency and improves subjective sleep quality in healthy adults. Evidence from 3 human RCTs shows consistent effects, with the mechanism involving NMDA receptor modulation and thermoregulation.
3 RCTsDose: 3g
87/100Amino Acids
Glycine improves overall sleep quality and reduces daytime sleepiness
Beyond reducing sleep latency, glycine (3g before bed) improves PSG-measured sleep quality including increased REM sleep and reduced nocturnal awakenings. Daytime sleepiness and fatigue are also significantly reduced the following morning.
3 RCTsDose: 3g