L-Theanine
Kimura, K., Ozeki, M., Juneja, L. R., & Ohira, H. (2007). L-Theanine reduces psychological and physiological stress responses. Biological Psychology, 74(1), 39-45.
Rao, T. P., Ozeki, M., & Juneja, L. R. (2015). In Search of a Safe Natural Sleep Aid. Journal of the American College of Nutrition, 34(5), 436-447.
Türközü D, Sanlier N. (2017). L-theanine, unique amino acid of tea, and its metabolism, health effects, and safety. Critical Reviews in Food Science and Nutrition, 57(8), 1681-1687.
Lyon MR, Kapoor MP, Juneja LR. (2011). The effects of L-theanine (Suntheanine®) on objective sleep quality in boys with ADHD: a randomized, doubleblind, placebo-controlled clinical trial. Alternative Medicine Review, 16(4), 348-354.
Kim S, Jo K, Hong KB, Han SH, Suh HJ. (2019). GABA and l-theanine mixture decreases sleep latency and improves NREM sleep. Pharmaceutical Biology, 57(1), 65-73.
Glycine
Bannai, M., Kawai, N., Ono, K., Nakahara, K., & Murakami, N. (2012). The effects of glycine on subjective daytime performance in partially sleeprestricted healthy volunteers. Frontiers in Neurology, 3.
Inagawa, K., Hiraoka, T., Kohda, T., Yamadera, W., & Takahashi, M. (2006). The impact of glycine ingestion before bedtime on sleep quality: Subjective effects. Sleep and Biological Rhythms, 4(1), 75–77.
Yamadera, W., Inagawa, K., Chiba, S., Bannai, M., Takahashi, M., & Nakayama, K. (2007). Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes. Sleep and Biological Rhythms, 5(2), 126–131.
Innocenti, A., Lentini, G., Rapacchietta, S., et al. (2023). The Role of Supplements and Over-the-Counter Products to Improve Sleep in Children: A Systematic Review. International Journal of Molecular Sciences, 24, 7821.
Magnesium
Sartori, S. B., Whittle, N., Hetzenauer, A., & Singewald, N. (2012). Magnesium deficiency induces anxiety and HPA axis dysregulation: Modulation by therapeutic drug treatment. Neuropharmacology, 62(1), 304-312.
Zhang, Y., Chen, C., Lu, L., et al. (2021). Association of magnesium intake with sleep duration and sleep quality: findings from the CARDIA study. Sleep, 45(4), zsab276.
Arab, A., Rafie, N., Amani, R., & Shirani, F. (2022). The Role of Magnesium in Sleep Health: a Systematic Review of Available Literature. Biol Trace Elem Res;201(1):121-128.
Vitamin B6
Hartmann, E., & Spinweber, C. (1979). Sleep induced by pyridoxine. Biological Psychiatry, 14(6), 983-984.
Axford, J., Heron, C., Ross, F. M., & Vaughan Williams, C. A. (1997). The effect of vitamin B6 on cognition. Rheumatology, 36(10), 1123-1132.
Zinc
Cherasse, Y., & Urade, Y. (2017). Dietary Zinc Acts as a Sleep Modulator. International Journal of Molecular Sciences, 18(11), 2334.
Ji, X., Compher, C.W., Irving, S.Y., Kim, J., Dinges, D.F., & Liu, J. (2021). Serum Micronutrient Status, Sleep Quality and Neurobehavioral function among Early Adolescents. Public Health Nutrition, 1–27.
Taurine
Chae Ryung Ha, So Hyun Kim, Su Bin Na, Jeong Soon You. (2015). The association among dietary taurine intake, obesity and quality of sleep in Korean women. Advances in Experimental Medicine and Biology, 803, 725–733.
GABA
Hepsomali, P., Groeger, J.A., Nishihira, J., & Scholey, A. (2020). Effects of Oral Gamma-Aminobutyric Acid (GABA) Administration on Stress and Sleep in Humans: A Systematic Review. Frontiers in Neuroscience, 14.
Kim S, Jo K, Hong KB, Han SH, Suh HJ. (2019). GABA and l-theanine mixture decreases sleep latency and improves NREM sleep. Pharmaceutical Biology, 57(1), 65-73.
Gottesmann, C. (2002). GABA mechanisms and sleep. Neuroscience, 111(2), 231-239.