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PMCID: PMC3005844
Mutomba MC, Yuan M, Konyavko M, Adachi S, Yokoyama CB, Esser V et al
Studies on the former have shown that it can produce a stable and sustained influence on learning and memory,43 while the latter may be able to support the differentiation, maturation, and survival of neurons in the brain.44 Another potential cognitive enhancement peptide is Pinealon , which can improve learning and memory by modulating gene expression and neurotransmitter activity
Oral precursors such as NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) must be absorbed by the intestine and then metabolized by the liver to be converted into NAD+
Adverse gastrointestinal effects of arginine and related amino acids (Grimble, 2007)
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