Glycine
May support sleep quality and relaxation for some users.
Educational only — not medical advice. BodEvo summarizes research cautiously and labels estimates as estimates. Talk to a physician or registered dietitian before starting any supplement, diet, or training program.
What the evidence says
Some support for sleep quality improvement. Mixed evidence overall.
Typical dose & timing
Dose: 3 g before bed.
Timing: 30–60 min before bed.
Role in a stack
Optional sleep support.
Redundancy check:
Cautions & safety
May cause GI discomfort.
Generally safe. Also present in collagen peptides.
Best for
sleep routine · relaxation
References
- Glycine improves subjective daytime performance in partially sleep-restricted healthy volunteers. Nutritional Neuroscience (2012)
Evidence is mixed. Some evidence glycine (3 g before bed) may improve subjective sleep quality and daytime performance. Not a high-priority supplement; effect sizes are small.
Use it in the app: open the Supplement Library and Stack Builder — free, local-first, no account required.