The Independent US Guide to Cognitive Supplements

The most comprehensively researched nootropic stack on the market. Most ingredients are clinically dosed and backed by peer-reviewed evidence. Our #1 pick for overall cognitive support.

Strong formula anchored by Lutemax 2020. Best value per serving. Note: Trustpilot score is very low -- verify independently before purchasing.

28 active ingredients -- the most comprehensive formula. Best for experienced biohackers. Not recommended for EU buyers (no EU storefront).

Most commercially successful US nootropic. Backed by two clinical studies. Good mainstream trust, but proprietary blends limit transparency.

4 personalised formula blends per month -- rotate until you find what works. Best for people who want to experiment. US only.

Gold standard for single-ingredient Lion's Mane. ISO in-house lab publishes CoA per batch. Best for buyers who want one ingredient done right.

NatureBell Ginkgo + Ginseng is the most affordable nootropic in this review at approximately $5 USD/month for a 5-month supply (300 capsules for ~$25). Chinese-manufactured with US branding, available on Amazon with Prime shipping. Combines Ginkgo Biloba (clinically dosed at 120mg) with Panax Ginseng — a TCM-inspired pairing for cerebral blood flow and cognitive energy. Best as a budget entry point or stack addition.

A minimalist 4-ingredient cognitive stack from Opti-Nutra (the same UK parent that makes Mind Lab Pro). Every ingredient is a branded, standardized extract dosed at or near clinical evidence. Best for people who want a clean, stackable formula rather than a kitchen-sink approach.

A 20-ingredient fully-disclosed open-label nootropic from Roar Ambition (UK). Most ingredients are at or near clinical doses. Premium positioning for ambitious professionals 30+; the 6-capsule serving and $90 single-bottle price are the main barriers.

A doctor-formulated brain-and-memory stack from Dr. Daniel Amen's BrainMD line. The four headline ingredients (PS, ALCAR, Ginkgo, Huperzine) are clinically dosed; several supporting ingredients are not. Positioned for older adults and patients in the Amen Clinics ecosystem.

The only major nootropic in liquid-shot format. Co-founded by UCLA-trained neuroscientist Dr. Andrew Hill. Disclosed doses are mostly clinical, but the 2.6/5 Trustpilot score and aggressive autoship complaints are a real concern — read the cancellation terms before subscribing.