US Market · Evidence-Graded · Affiliate-Disclosed
The Independent US Guide to
Cognitive Supplements
We test every ingredient dose against peer-reviewed clinical trials. No anonymous authors. No hidden commissions.
Why NootropicGuide is different
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Clinical dosing audits
Every product review includes a dosing-vs-evidence table comparing each ingredient to the minimum effective dose from peer-reviewed trials.
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NSF & third-party tested
We prioritise products with independent third-party testing and flag brands with documented BBB or subscription complaints.
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Subscription transparency
We score every brand on subscription cancellation experience. Trustpilot scores shown inline — including the bad ones.