Nootropics Database

“Nootropic” isn’t a chemical class.

Caffeine, alpha-GPC, piracetam, and Semax are all called nootropics, but they work through very different mechanisms.

One is a stimulant.

One is a choline donor.

One is a synthetic racetam.

One is a peptide.

The label tells you what someone hopes to improve, not how the compound works.

That’s why these are best read individually rather than treated as one coherent class.

Nootropic research has a basic problem: healthy cognition is difficult to improve in a way that’s both measurable and noticeable.

A compound may improve reaction time, working memory, or performance on a specific test without producing any meaningful difference in everyday function.

Most studies are also small and short, and often use young, healthy participants.

That makes the details important:

What was measured? Who was tested? How large was the effect? And would you actually notice it?

Caffeine with L-theanine is one of the better-supported combinations here, particularly for attention and alertness.

Other compounds have much thinner human evidence.

Each monograph separates the mechanism from the clinical result so you can see the difference.

Sleep, exercise, and correcting a real deficiency also matter more than most nootropics.

These compounds make more sense as additions to the basics than substitutes for them.

This page focuses mainly on isolated compounds — 24 of the 37 here are racetams, peptides or other lab-made molecules.

The herbal side includes 27 plants: among them bacopa, ginkgo, rhodiola, gotu kola, sage, saffron, and ginseng.

They don’t all aim at the same thing.

Bacopa is used mainly for memory.

Rhodiola is more relevant to mental fatigue.

Ginkgo is better studied in age-related cognitive decline than as a general cognitive enhancer in healthy adults.

The full list is on the nootropic herbal action page.

Potency across this index varies by orders of magnitude.

Piracetam is dosed in grams, noopept in tens of milligrams, and huperzine-A in micrograms.

How long each one lasts varies just as widely, and that is what decides when to take it and whether a second dose stacks on the first.

The nootropic dosage guide tabulates half-life and studied dose for every compound here, with the nootropic herbs in their own table because they are not dosed in comparable units.

Not everything in the nootropics world is an ordinary supplement.

Some compounds are sold as supplements.

Some are prescription medicines.

Others are research chemicals, experimental peptides, or drugs approved only in certain countries — 7 of the 37 here.

That status matters for safety, manufacturing quality, dosing, and how much human data exists.

Each monograph lists the compound’s status near the top.

It’s worth checking before anything else.

• Nootropic Dosage Guide — half-life and studied dose for every compound and herb in the category.
• Nootropic Herbs — the whole-plant side of the category.
• Peptides — peptide nootropics and related compounds.
• Supplements — the full isolated-compound library.
• Nervous System — the broader physiology and herbal actions affecting the brain and nervous system.