Supplements for brain function and long-term cognition

Brain-supplement research splits into acute cognitive performance and long-term neuroprotection. These are the compounds with the strongest evidence in at least one of those dimensions, with honest notes about where the effects are small.

The short list

Frequently asked

What's the best brain supplement for memory?
Long-term: omega-3 (EPA/DHA). Acute: caffeine + l-theanine. For older adults with memory concerns: phosphatidylserine and bacopa have the strongest data.
Does lion's mane really work?
Emerging. Small human trials show improved cognitive scores in older adults; mechanism (NGF support) is biologically plausible. Effect size is modest and takes 8+ weeks.
Is creatine good for the brain?
Yes, especially under sleep deprivation or mental fatigue. Brain-specific creatine dosing (5–10 g) may outperform the muscle-dose of 3–5 g.

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