Glycineand Sleep Duration.
Evidence gradeB
ImpactSmall
Confidencemedium
Imported rating. This grade comes from SuppCo and has not been independently reviewed. It describes research, not a product, and it is not medical advice.
The rating
- Direction
- Favourable
- Rated by
- SuppCo
- Observed
- 28 September 2026
Studies behind it
Nutritional Modulation of Sleep Latency, Duration, and Efficiency: A Randomized, Repeated-Measures, Double-Blind Deception StudyG. Howatson · Medicine & Science in Sports & Exercise2022The effect of glycine administration on the characteristics of physiological systems in human adults: A systematic reviewJanjira Soh · GeroScience2023