The science behind glycine and sleep:

-Core temperature regulation

-Sleep architecture (better quality sleep)

-Cognitive recovery

Dose & timing: effective doses in studies are 3g taken 30-60 min before bed. Higher doses lack additional benefit and may cause GI upset.

Bottom line: 3 g glycine ~1 hour before bed is a low-risk, evidence-backed way to fall asleep faster and feel more refreshed, especially if you have light or disrupted sleep. It’s not a sedative like melatonin or z-drugs.