Evidence-Based Stack
Cognitive Stack
Four ingredients with human-trial evidence for memory, focus, or processing speed — not the kitchen-sink nootropic shopping list.
Nootropics marketing has produced a lot of noise. This stack narrows to compounds with RCT-level evidence in healthy or mild-impairment populations. Creatine (yes, the gym supplement) has growing evidence for cognitive benefit particularly under stress or sleep deprivation — its brain role is distinct from its muscle role. Omega-3s (specifically DHA) are the structural fat of neurons. L-theanine + caffeine is the acute focus stack with the best-documented combination benefit. Bacopa is the best-evidenced verbal-memory herb for chronic use. Skipped: piracetam and racetams (off-label prescription pharmacokinetics, not supplements), phenylpiracetam, modafinil.
What's in it
Brain ATP support — increases cognitive performance under sleep deprivation and mental fatigue; 5g/day is the same dose that helps muscles.
Dose: 5 g/day, any time with a meal
Full Creatine profile →Structural support for neuron membranes; DHA is the dominant brain fat. Cognitive and mood benefits at 1-2 g combined EPA+DHA.
Dose: 1-2 g combined EPA+DHA/day, with food
Full Omega-3 Fatty Acids profile →Acute focus and sustained attention — the best-studied cognitive combination. Smoother curve than caffeine alone.
Dose: 100 mg caffeine + 200 mg L-theanine, morning or pre-task
Full Caffeine + Theanine Stack profile →Chronic memory and learning enhancer — best-evidenced nootropic herb. Effects emerge at 8-12 weeks.
Dose: 300 mg standardized bacosides, with a fat-containing meal
Full Bacopa monnieri profile →How to take it
Creatine and omega-3 go daily and don't depend on timing — both work via steady concentration. L-theanine + caffeine is an acute, as-needed pairing for demanding tasks (avoid within 6 hours of intended sleep). Bacopa requires commitment — no acute effect, build up over 2-3 months for evaluation.
Cautions
Creatine is remarkably safe but doubles water retention early — hydrate accordingly. Omega-3 at high doses has mild anticoagulant effect; check if on blood thinners. Caffeine interacts with multiple medications and can disrupt sleep if timed late. Bacopa can cause GI upset in some users at full dose — start with half.
Next steps
Educational only. Stack recommendations are not medical advice. Discuss any new supplement protocol with your clinician, especially if you take prescription medication or have a chronic condition.