Amino Acid
Glycine (for Relaxation)
Also known as: Gly, Aminoacetic acid
Simplest amino acid with profound calming and sleep effects. Lowers body temperature.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Sleep quality
- Relaxation
- Cognitive function
How it works
- Lowers core body temperature
- Inhibitory neurotransmitter
- Collagen precursor
Dosage
- Typical range
- 3g before bed
- Timing
- 30-60 min before bed
- With food
- Either
- Duration
- Safe nightly
- Special populations
- Sleep quality, temperature regulation
Forms
- Powder
- Capsule
Safety
Common side effects
- Well tolerated
- Sweet taste
Contraindications
- None known
Products containing Glycine (for Relaxation)
Top-scoring supplements in our catalog that list Glycine (for Relaxation) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
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Evidence notes
Good evidence for sleep improvement
Grade B: Some human trials support key claims; further confirmation needed.
Related in Amino Acid
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.