Primary Research · 2012
New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep
Bannai and Kawai · Journal of Pharmacological Sciences, 2012
Key finding
3g glycine before bed improved subjective sleep quality and next-day fatigue scores.
Read the paper
Open on PubMedhttps://pubmed.ncbi.nlm.nih.gov/22293292/
Cited in 3 guides
Protocol
Best Sleep Supplement Protocol 2026: Clinical Evidence Stack
Build a cheap, non-habit-forming sleep stack using magnesium glycinate, L-theanine, and glycine — three compounds with the strongest clinical trial support.
Guide
Magnesium for Anxiety: The Glycinate-GABA Connection
Magnesium deficiency is linked to anxiety symptoms. Glycinate is the form with evidence for anxiety reduction — here's the mechanism and protocol.
Guide
Supplement Timing Guide 2026 — Backed by Science
Learn which supplement timing rules genuinely affect absorption — fat-soluble vitamins, mineral conflicts, and what disrupts sleep. A practical, evidence-based guide.
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