Ingredient Atlas
The research behind 43 ingredients found in brain and sleep supplements. Each full entry lists every published study in people we can find, and shows which ones we've read in full so far.
- 43 ingredients
- 50,237 papers sorted
- 79 studies read in full
- 12 full entries, updated 19 Oct 2026
In the Atlas this month
Plants and mushrooms
Roots, leaves, flowers, seeds, berries and one mushroom
Vitamins
The vitamins found in brain and sleep supplements
Minerals
Minerals and trace minerals
Other compounds
Amino acids, fats and other compounds
Where the research comes from
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Every study listed
We search PubMed, the main library of medical research, and list every study in people. Lab and animal work is counted, not used for results.
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Read in full
A result only appears once we've read the whole paper and checked its numbers. Each entry shows which studies that covers.
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Kept up to date
Each entry has a version number that goes up whenever its data changes, and shows the date it was last updated.
New to nootropics? Read our guide: What are nootropics?