Our guides answer the bigger questions: what nootropics are, which ones have real evidence, how to stack them safely and how the popular ingredients compare. Every guide is referenced to published research. For single ingredients, see our nootropic ingredients library.
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What Are Nootropics?: definitions, categories, regulation and whether they work
The Best Nootropics: evidence-ranked picks and our methodology
Nootropic Stacks For Beginners
Nootropic Side Effects And Safety
Guides By Goal
Best Supplements For Focus
Best Supplements For Memory
Nootropics And ADHD: What The Evidence Says
Adaptogens: What They Are And Which Ones Work
Comparisons
Alpha-GPC Vs Citicoline
NALT Vs L-Tyrosine
Phosphatidylserine Vs Phosphatidylcholine
Suntheanine Vs L-Theanine
Ashwagandha Vs Rhodiola
L-Theanine And Caffeine
Mind Lab Pro Vs Alpha Brain
Nothing on Nootropic.org is medical advice. Please read our medical disclaimer.
Most well-studied natural nootropics have mild, mostly digestive side effects, but contaminated products, unapproved drugs sold as supplements and drug interactions pose bigger risks.
Four beginner nootropic stacks built from ingredients with human evidence, the doses used in studies, a safe way to introduce them and the combinations to avoid.
Phosphatidylserine and phosphatidylcholine are both membrane phospholipids, but they do different jobs. PC is a major dietary choline source; PS is studied for memory and stress. Here is how to choose.
Suntheanine is Taiyo’s branded L-theanine. We explain how it is made, why racemic DL-theanine is a concern, and when paying for the brand makes sense.
Nootropics are substances taken to support memory, focus or other mental functions. Here is where the term came from, the main types, what the research actually shows and how to start safely.
