Acetyl-L-Carnitine

Fights age-related decline in mental function.

Ramacci, M., Cairns, M., Wilton-Cox, H., & Dowson, J. (1992). The Morphology of Lipopigment in Rat Purkinje Neurons After Chronic Acetyl-L-Carnitine Administration. Biological Psychiatry, 32(2), 179-87.

Promotes happiness.

Ancona, L., Calvani, M., Janiri, L., Pirrongelli, C., Casella, L., & Tempesta, E. (1987). Acetyl-L-Carnitine in Depressed Subjects. Drugs Under Experimental and Clinical Research, 13(7), 417-23.
Zotti, C., Petrelli, G., Lecciso, G., Fiore, A., Corallo, D., & Garzya, G. (1990). Evaluation of the Effects of Acetyl-L-Carnitine on Senile Patients Suffering from Depression. Drugs Under Experimental and Clinical Research,16(2), 101-6.

Boosts mental energy and focus.

Pistarini, C., Fugazza, G., & Guarnaschelli, C. (1988). Pathological Brain Aging: Evaluation of the Efficacy of a Pharmacological Aid. Drugs Under Experimental and Clinical Research, 14(11), 715-8.