Short answer: blueberry polyphenols have research specifically linking them to improved vascular function and cognitive performance in healthy older adults — a genuinely relevant citation, distinct from more general antioxidant claims.
What blueberry polyphenols are
Polyphenols are plant compounds with antioxidant properties, and blueberries are particularly rich in a specific subtype called anthocyanins, responsible for their deep blue-purple color.
The specific research worth knowing
A notable double-blind trial with healthy older adults linked blueberry polyphenol supplementation to improvements in vascular function and cognitive performance measures — a genuinely direct citation for this exact use case, published in a peer-reviewed nutrition journal.
Why this ingredient is considered one of the stronger ones
Compared to ingredients with only general antioxidant research (like Astaxanthin) or exercise-focused research (like Beta-Alanine), blueberry polyphenols carry research more directly applicable to cognitive and vascular outcomes specifically — a genuinely meaningful distinction when evaluating a formula's ingredient list.
Dosing transparency
In many formulas, blueberry doesn't carry a stated per-capsule milligram amount, similar to several other botanical ingredients — worth knowing if exact dosing matters to your evaluation.
Blueberry alongside Bacopa in one formula
MemoHoney combines both of its best-evidenced ingredients together.
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See our Bacopa & Blueberry evidence guide for how these two ingredients compare directly.