Peptides marketed for focus and cognition

These are compounds sold for cognition — this is not a recommendation list, and nothing here is ranked. Of the 4 we track with this claim, 1 has any registered human trial at all, 1 has one that actually studied cognition, and 0 are FDA-approved for any indication.

Several of these are approved medicines in Russia and are sold as nootropics elsewhere, which is a genuine difference in regulatory systems rather than a difference in the molecule. Where human research exists it has mostly studied recovery after a stroke or injury, not enhancement in healthy people.

Cerebrolysin

Porcine brain peptide preparation

A porcine brain-derived preparation, not a single defined molecule. Studied largely for stroke and dementia rather than cognitive enhancement in healthy people.

Studied for cognition

Registered trials

Semax

ACTH(4-10) analogue

Zero trials in the international registry. Widely sold as a nootropic; approved as a drug in Russia, which is a different regulatory system with different evidence standards.

No registered trial

Registered trials

Dihexa

N-hexanoic-Tyr-Ile-(6) aminohexanoic amide · PNB-0408

Sold as a potent nootropic on the strength of rodent work. Zero registered human trials.

Sold as an anxiolytic nootropic; approved in Russia, a different regulatory system. Zero trials in the international registries we track.

No registered trial

Registered trials

—Read this

Marketed for is not tested for

A compound can be sold for cognition and studied for something else entirely — that is the most common pattern on this site, not the exception. A row saying "trials, but not for cognition" means registered studies exist and none of them asked this question. It is not a claim that the compound does nothing.

See all 42 compounds →