Glycine is a sweet-tasting amino acid used at 3 g before bed in sleep studies. It is also a collagen building block.
Supplements
Moderate evidence
Glycine Powder
Cheap amino acid many people take before bed.
How to use
3 g in water 30–60 minutes before bed.
Details
- Ingredients
- Glycine
- Benefits
- Sleep onset, Subjective rest
- Dosage
- 3 g at night
- When to take
- Before bed
- Side effects
- Rare GI softness.
- Scientific evidence
- Small sleep trials show improved subjective sleep and next-day fatigue.
- Form
- Powder
- Third-party tested
- Yes
Editorial rating ★ 4.3
Low cost, low drama. A reasonable first sleep experiment.
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