Glycine for Sleep Quality
Optional 3g bedtime glycine experiment with subjective sleep and next-day fatigue tracking; review caveats before adding it to a routine.
- Time
- 2 min/day
- Cost
- $0-20
- Equipment
- None required
- Min. Trial
- 1-2 weeks
Dosage & Timing
- Duration
- 2 min
- Frequency
- Nightly
- Best Time
- evening
Evidence Strength
4/5 — StrongGood clinical evidence from multiple human trials. Mechanism (core temp reduction via peripheral vasodilation) is well-understood.
Overview
Take 3g of glycine 30-60 minutes before bed as an optional supplement experiment. Keep expectations modest, track subjective response, and review medication interactions or medical conditions before starting.
Wellness education and routine support only. Review the evidence, caveats, and interactions before trying this protocol, and ask a clinician when medical conditions, pregnancy, medications, or symptoms are involved.
How To Do It
- 1
Get glycine powder or capsules
Glycine is inexpensive and widely available. Powder dissolves in water and tastes slightly sweet.
- 2
Take 3g before bed
Dissolve 3g in water or take capsules 30-60 minutes before bed.
- 3
Track morning response
Note sleep quality, next-day fatigue, and any digestive discomfort for 1-2 weeks before deciding whether it helps.
The Evidence
Each claim is linked to its source study. Confidence reflects the study design — systematic reviews and RCTs rank highest.
The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers
Bedtime glycine improved next-day subjective fatigue after restricted sleep.
Source Context
Primary references behind the protocol summary.
Who Popularized This
Creator references are context only. LiveWell weighs evidence, safety notes, and routine fit separately from who discussed a protocol.
Interactions & Warnings
Review 1 contraindication and 2 interaction notes before adding this protocol to a routine.
Contraindications
- Clozapine users (glycine may interact)
Interactions
- May enhance effects of magnesium for sleep
- Synergistic with sleep temperature optimization
What To Track
These are review prompts for your own routine notes, not expected improvements or medical outcome targets.
Routine actions change your saved plan after sign-in. The protocol guidance above remains wellness education, not a personalized recommendation or expected outcome.
Saved-plan controls for this protocol
Related Protocols
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Try a cooler bedroom and a warm pre-bed shower as adjustable sleep-environment cues, then track comfort and sleep timing for a week.
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Take 200mg elemental magnesium as L-threonate before bed. This form uniquely crosses the blood-brain barrier, supporting GABA activity and sleep depth.
Caffeine Curfew
Set a personal caffeine curfew, audit hidden sources, and track sleep timing or next-day energy for 1-2 weeks.
Morning Sunlight Exposure
Use outdoor morning light within 60 minutes of waking as a practical cue that may help anchor circadian timing and a consistent morning routine.