This site states this specific disclaimer directly, introducing its research references: these concern the individual ingredients, not a clinical trial of the finished product.
Worth crediting this site for stating this limit plainly rather than implying its citations validate the specific combined Golden Brain capsule — a distinction worth remembering when evaluating any of the six sources.
Worth reading this disclaimer alongside this site's separate admission that the Neuro-Optimizer Blend and antioxidant support are not itemized — even the named-ingredient research has this stated limit, let alone the unnamed portion.