Pickering, Gisèle et al. “Magnesium Status and Stress: The Vicious Circle Concept Revisited.” Nutrients vol. 12,12 3672. 28 Nov. 2020, doi:10.3390/nu12123672

Wienecke E, Nolden C. Langzeit-HRV-Analyse zeigt Stressreduktion durch Magnesiumzufuhr [Long-term HRV analysis shows stress reduction by magnesium intake]. MMW Fortschr Med. 2016 Dec;158(Suppl 6):12-16. German. doi: 10.1007/s15006-016-9054-7. Epub 2016 Dec 8. PMID: 27933574.

Kim, Hee-Yong et al. “Phosphatidylserine in the brain: metabolism and function.” Progress in lipid research vol. 56 (2014): 1-18. doi:10.1016/j.plipres.2014.06.002

Monteleone P, Beinat L, Tanzillo C, Maj M, Kemali D. Effects of phosphatidylserine on the neuroendocrine response to physical stress in humans. Neuroendocrinology. 1990 Sep;52(3):243-8. doi: 10.1159/000125593. PMID: 2170852. 

Nobre AC, Rao A, Owen GN. L-theanine, a natural constituent in tea, and its effect on mental state. Asia Pac J Clin Nutr. 2008;17 Suppl 1:167-8. PMID: 18296328.

Kimura K, Ozeki M, Juneja LR, Ohira H. L-Theanine reduces psychological and physiological stress responses. Biol Psychol. 2007 Jan;74(1):39-45. doi: 10.1016/j.biopsycho.2006.06.006. Epub 2006 Aug 22. PMID: 16930802. 

Cohen, Marc Maurice. “Tulsi - Ocimum sanctum: A herb for all reasons.” Journal of Ayurveda and integrative medicine vol. 5,4 (2014): 251-9. doi:10.4103/0975-9476.146554

Schellekens C, Perrinjaquet-Moccetti T, Wullschleger C, Heyne A. An extract from wild green oat improves rat behaviour. Phytother Res. 2009 Oct;23(10):1371-7. doi: 10.1002/ptr.2751. PMID: 19322760.

Kathy Abascal and Eric Yarnell, Alternative and Complementary Therapies 2004 10:6, 309-315 DOI:10.1089/act.2004.10.309