cognitive · Outcome
Hold more in your head without losing the thread.
How to measure:
Three levers, one stack. Each works through a different mechanism. They compound.
Noticeable
600-1200mg daily
Evidence
Effect size
Corpus
5 papers
0 small · 3 moderate · 0 large · 5 unclear
“N-acetyl cysteine (NAC) had a significant effect on working memory in patients with schizophrenia.”
Minimal
45-120 min, 3-4x per week
Evidence
Effect size
Corpus
10 papers
11 small · 2 moderate · 0 large · 1 unclear
Minimal
Evidence
Effect size
Corpus
3 papers
2 small · 0 moderate · 0 large · 2 unclear
Everything we found, ranked by how strongly we recommend it. Tap any to see the studies.
Top pick
The one we recommend first
Also recommended
Evidence-backed alternatives or additions
Worth considering
Only in specific contexts (see card)
Skip
Commonly suggested, not supported
Every pick has two signals. They answer different questions and we never bundle them into one number.
Effect size
How big is the change on working memory, in the units that matter for this outcome.
Confidence
How sure are we the effect is real for working memory, given the studies we have.
For every pick, the “papers” number is how many studies we've cataloged that test this entity for working memory. “Favorable” means the study reported the direction you want.
The tier badge (S, A, B…) on the entity itself is its overall research confidence across all outcomes. It's the same letter wherever you see this entity on the site, not specific to working memory.
Want to browse supplements directly instead? See the full catalog →
“Exercise interventions improve working memory in children with overweight and obesity.”
“Blueberry concentrate supplementation showed suggestive improvement in working memory on the 2-back test compared with placebo.”