Research context (RUO): This hub gives an overview of peptides studied in neuro and nootropic research. All substances mentioned are supplied solely for in-vitro laboratory research and are not intended for human or animal use.
Cognitive peptides: the overview of neuro research
Cognitive or “nootropic” peptides are molecules that in research are linked to brain processes: memory, attention, mood, anxiety and sleep. By no means do they all act via the same route. This page is an overview (hub): for each peptide we briefly explain what the research focuses on and link to the separate pillar. All findings come from cell and animal models, not from use by humans.
The broad picture: neurotrophins and signalling substances
Many of these peptides ultimately touch the same system: the neurotrophins (proteins such as BDNF and NGF that support the growth and survival of nerve cells) and the balance between excitatory and inhibitory signalling substances in the brain. Where they differ is the starting point — and it is precisely that which makes each peptide its own research subject.
Semax & Selank — the Russian nootropics
Semax is an ACTH fragment studied mainly for memory, attention and neuroprotection, while Selank is a tuftsin analogue studied mainly as an anxiety inhibitor (anxiolytic). They are often placed side by side — see the comparison Selank vs Semax.
Adamax & Pinealon
Adamax is a nootropic research peptide linked to neurotrophin signalling, and Pinealon is an ultra-short bioregulator studied mainly for neuroprotection and protection against oxidative stress.
Sleep & wakefulness
Cognition is closely linked to sleep and alertness. DSIP (delta sleep-inducing peptide) is studied around deep sleep, while orexin A and B specifically drive alertness and the sleep-wake rhythm.
In the lab: handling & dissolving
These peptides are supplied as a freeze-dried powder that is reconstituted before use. See reconstitute peptides and which liquid you choose.
Quality & purity
Every relevant batch is independently HPLC-tested by an external laboratory; the CoA is publicly verifiable per batch. See also why we rejected a batch.
Frequently asked questions
What are cognitive or nootropic peptides?
Research molecules that in studies are linked to brain processes such as memory, attention, anxiety and sleep. They are studied solely for laboratory research.
What is the difference between Semax and Selank?
Semax (an ACTH fragment) is studied mainly for cognition and neuroprotection; Selank (a tuftsin analogue) mainly as an anxiolytic. See Selank vs Semax.
Which peptides relate to sleep?
DSIP is studied around deep sleep; orexin A and B specifically drive alertness. Both touch cognition via the sleep-wake system.
Do these peptides work in humans?
The evidence comes predominantly from cell and animal models and (for some) limited clinical studies. Peplife makes no usage or health claims.
May I use these peptides?
No. All cognitive peptides are intended solely for in-vitro laboratory research (RUO), not for human or animal use.
Read more & research at Peplife
Sources: Selank & GABAergic gene expression (Frontiers in Pharmacology) · Orexin/hypocretin & sleep-wake regulation (PMC)
Research Use Only. All products are supplied exclusively for in vitro laboratory research. Not intended for diagnostic or therapeutic use in humans or animals, and not approved by the EMA or FDA.
All cognitive peptides HPLC-tested by an external laboratory, CoA per batch publicly verifiable and discreet EU shipping.