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Peptides / Cognitive peptides

226 In the index

P21 P21

An experimental peptide studied only in rodents for possible mood and brain-protective effects. It has never been tested in humans, so nothing is known yet about how it would work or whether it's safe in people.

Also known as P021

Effects Focus
Routes Subcutaneous
Legal status Research chemical
WADA Not listed

Reported dosing

User-reported

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose Not established for humans
Reported range Animal study doses only
Route Subcutaneous injection (studied only in animals)
Frequency Not established
Duration Not established

An experimental neurotrophic peptide fragment (related to BDNF) studied only in rodent models; no human clinical trials or dosing data exist.

Where this comes from Animal studies only

There is no approved human dosing for this compound. The figures above are what users and vendors report, not what has been established as safe or effective. Treat them as a record of what is done, not as guidance.