Brain & Cognitive

A group of eight essential B vitamins that play well-established roles in energy metabolism and neurological function — deficiency is common in certain populations.

The most-studied sports supplement in history — strong evidence for strength and power, emerging evidence for cognitive benefits.

EPA and DHA from fish oil have strong cardiovascular and cognitive evidence — but dose, form, and freshness matter more than most labels suggest.

A bioavailable choline source with some RCT support for cognition and power output — promising but the trial base is still thin for healthy adults.

A dual water/fat-soluble antioxidant with solid evidence for diabetic neuropathy and blood sugar support, and a reasonable safety profile.

An Ayurvedic herb with multiple RCTs supporting memory enhancement — but effects require 8-12 weeks of consistent use and are most pronounced for memory acquisition.

One of the most-studied herbal supplements in history, with mixed but meaningful evidence for circulation and cognition — though the large dementia-prevention trials were negative.

A sugar alcohol with good RCT evidence for reducing anxiety and panic symptoms at high doses, with additional data for PCOS — but requires gram-level dosing.

A calming amino acid from tea with solid RCT evidence for reducing stress and improving focused attention — without causing drowsiness.

An amino acid precursor to dopamine and norepinephrine with good evidence for preserving cognitive performance under acute stress — less clear benefit under normal conditions.

A phospholipid with moderate RCT evidence for cognitive function in older adults and cortisol modulation after exercise — effects in healthy young adults are less established.

An adaptogenic herb with solid RCT evidence for reducing mental fatigue and improving stress resilience, particularly under demanding conditions.

Broccoli-derived compound that activates the Nrf2 antioxidant pathway, with emerging evidence for metabolic and neuroprotective benefits.

A flavonoid abundant in chamomile with preliminary evidence suggesting mild relaxation and neuroprotective properties, though human data remains thin.

A medicinal mushroom with fascinating NGF-boosting potential in animal studies, but human clinical evidence remains limited to a few small pilot trials.

Pyrroloquinoline quinone shows mitochondrial support in cell and animal studies, but human evidence is limited to small pilot trials with modest results.