Amino Acid
Glycine (Longevity Dose)
Also known as: Glycine, Aminoacetic acid
B
Evidence
Simplest amino acid with emerging longevity benefits at higher doses. Supports glutathione, collagen, sleep, and may mimic methionine restriction.
Primary uses
- Longevity
- Sleep
- Glutathione support
- Collagen synthesis
How it works
- Glutathione precursor
- Collagen building block
- May mimic methionine restriction
- Inhibitory neurotransmitter
Dosage
- Typical range
- 3-15g daily for longevity; 3g for sleep
- Timing
- Before bed for sleep; divided for longevity
- With food
- Optional
- Duration
- Safe long-term
- Special populations
- Sleep, longevity, glutathione support
Forms
- Powder
- Capsules
Safety
Common side effects
- Sweet taste
- Soft stools at high doses
Contraindications
- None
Evidence notes
Traditional uses plus emerging longevity research
Grade B: Some human trials support key claims; further confirmation needed.
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