Though a more thorough analysis is required, as least as far as tested here FOXO4-DRI appears to be well tolerated, which is an absolutely critical milestone to pass when aiming to treat relatively healthy aged individuals(de Keizer, 2017)
Glutamatergic and neuroimmune mechanisms of N-acetylcysteine-mediated inhibition of cue-induced nicotine seeking
None of that is the same as a promised jump in strength, speed, or endurance on demand, and any source implying otherwise is overselling
Effects of an Oroxylum indicum Extract (Sabroxy) on Cognitive Function in Adults With Self-reported Mild Cognitive Impairment: A Randomized, Double-Blind, Placebo-Controlled Study
Hawryluk et al., 2012, 2014)
Characterization of a pigment less conidium mutant of Aspergillus fumigatus with altered conidial surface and reduced virulence