Zembrin® (Sceletium Tortuosum)
Zembrin® is a trademark of HG&H Pharmaceuticals (Pty) Limited. U.S. Patents #6,288,104, #8,552,051 and #8,980,338 B2
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3828542
https://www.ncbi.nlm.nih.gov/pubmed/23441963
https://www.ncbi.nlm.nih.gov/pubmed/23903032
https://www.ncbi.nlm.nih.gov/pubmed/25389443
https://www.ncbi.nlm.nih.gov/pubmed/23441963
Bacopa Monnieri
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3746283
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4945900
https://www.ncbi.nlm.nih.gov/pubmed/26387382
https://www.ncbi.nlm.nih.gov/pubmed/23936991
https://www.ncbi.nlm.nih.gov/pubmed/25518293
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3537209
Alpha-GPC
https://www.ncbi.nlm.nih.gov/pubmed/1574535
https://www.ncbi.nlm.nih.gov/pubmed/26582972
https://www.ncbi.nlm.nih.gov/pubmed/28521701
https://www.ncbi.nlm.nih.gov/pubmed/1319912
https://www.ncbi.nlm.nih.gov/pubmed/22673596
https://www.ncbi.nlm.nih.gov/pubmed/2071257
https://www.ncbi.nlm.nih.gov/pubmed/24156263
https://www.ncbi.nlm.nih.gov/pubmed/2782876
https://www.ncbi.nlm.nih.gov/pubmed/8030842
https://www.ncbi.nlm.nih.gov/pubmed/1916007
https://www.ncbi.nlm.nih.gov/pubmed/12637119
https://www.ncbi.nlm.nih.gov/pubmed/8477148
https://www.ncbi.nlm.nih.gov/pubmed/11589921
Malic Acid
https://pubchem.ncbi.nlm.nih.gov/compound/L-Malic_acid#section=Top
Phosphatidylserine
https://www.ncbi.nlm.nih.gov/pubmed/8323999
https://www.ncbi.nlm.nih.gov/pubmed/3518329
https://www.ncbi.nlm.nih.gov/pubmed/2027477
https://www.ncbi.nlm.nih.gov/pubmed/11842886
https://www.ncbi.nlm.nih.gov/pubmed/18616866
https://www.ncbi.nlm.nih.gov/pubmed/1633433
https://www.ncbi.nlm.nih.gov/pubmed/1693032
https://www.ncbi.nlm.nih.gov/pubmed/23495677
L-Tyrosine
https://www.ncbi.nlm.nih.gov/pubmed/2736402
https://www.ncbi.nlm.nih.gov/pubmed/27403851
https://www.ncbi.nlm.nih.gov/pubmed/26424423
https://www.ncbi.nlm.nih.gov/pubmed/8293316
https://www.ncbi.nlm.nih.gov/pubmed/27403851
https://www.ncbi.nlm.nih.gov/pubmed/26424423
https://www.ncbi.nlm.nih.gov/pubmed/25797188
https://www.ncbi.nlm.nih.gov/pubmed/25598314
https://www.ncbi.nlm.nih.gov/pubmed/25326727
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3035600
Huperzine A
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3781107
https://www.ncbi.nlm.nih.gov/pubmed/24639880
https://www.sciencedirect.com/science/article/pii/S0091305703001114
https://www.cochranelibrary.com/cdsr/doi/10.1002/14651858.CD005592.pub2/abstract
https://www.ncbi.nlm.nih.gov/pubmed/18425924
https://www.ncbi.nlm.nih.gov/pubmed/19221692
https://www.ncbi.nlm.nih.gov/pubmed/21833673
GABA (Gamma-amino-butyric-acid)
https://www.ncbi.nlm.nih.gov/pubmed/28209926
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594160
https://www.ncbi.nlm.nih.gov/pubmed/25869158
https://www.ncbi.nlm.nih.gov/pubmed/26279408?dopt=Abstract
Taurine
http://www.lifeextension.com/magazine/2013/6/the-forgotten-longevity-benefits-of-taurine/page-01
https://www.ncbi.nlm.nih.gov/pubmed/3788775
https://www.ncbi.nlm.nih.gov/pubmed/19239132
https://www.ncbi.nlm.nih.gov/pubmed/20804626
https://www.ncbi.nlm.nih.gov/pubmed/20804583
https://www.ncbi.nlm.nih.gov/pubmed/2496406
https://www.ncbi.nlm.nih.gov/pubmed/9577248
https://www.ncbi.nlm.nih.gov/pubmed/9437654
https://www.ncbi.nlm.nih.gov/pubmed/19455480
https://www.ncbi.nlm.nih.gov/pubmed/20667936
https://www.ncbi.nlm.nih.gov/pubmed/27163699
https://www.ncbi.nlm.nih.gov/pubmed/29631391
https://www.ncbi.nlm.nih.gov/pubmed/26208967
https://www.ncbi.nlm.nih.gov/pubmed/26918249
https://www.ncbi.nlm.nih.gov/pubmed/28118062
Camellia Sinesis
https://www.ncbi.nlm.nih.gov/pubmed/27797683
https://www.ncbi.nlm.nih.gov/pubmed/28496007
https://www.ncbi.nlm.nih.gov/pubmed/26577614
https://www.ncbi.nlm.nih.gov/pubmed/15969262
https://www.ncbi.nlm.nih.gov/pubmed/16582024
https://www.ncbi.nlm.nih.gov/pubmed/19147161
https://www.ncbi.nlm.nih.gov/pubmed/27698343
https://www.ncbi.nlm.nih.gov/pubmed/27806972
https://www.ncbi.nlm.nih.gov/pubmed/27845787
https://www.ncbi.nlm.nih.gov/pubmed/16404708
https://www.ncbi.nlm.nih.gov/pubmed/16968850
https://www.ncbi.nlm.nih.gov/pubmed/15083319
https://www.ncbi.nlm.nih.gov/pubmed/22277550
Guarana
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3599679
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4399916
https://www.ncbi.nlm.nih.gov/pubmed/27302304
https://www.ncbi.nlm.nih.gov/pubmed/23220610