Nootropics
Nootropics promise sharper focus or memory, and the research behind them is younger and thinner than the marketing suggests. A few ingredients here have a real trial base — L-theanine's calming effect, for instance, is reasonably well documented — but most cognitive-enhancement claims rest on small studies, short trial durations, or research in impaired populations that doesn't clearly generalize to healthy adults. Grades in this category skew toward moderate rather than strong.
7 products · sorted by evidence grade
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