Nootropic & Cognitive Peptides — By Use Case
Most of this shelf came out of Soviet and Russian research programs, which is why several compounds carry trial data that rarely surfaces in English-language summaries. They don't share a mechanism, so the right way to shop is by what you actually want — calm, focus, sleep, or mood — and then by which version of a compound you're buying, because the modified forms behave differently from the base.
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N-Acetyl Semax Amidate
N-Acetyl Semax Amidate (Met-Glu-His-Phe-Pro-Gly-Pro analog)
NA-Selank Amidate
N-Acetyl Selank Amidate
DSIP
Delta Sleep-Inducing Peptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu)
PE-22-28
Spadin 17-amino-acid sortilin propeptide fragment
Selank
Thr-Lys-Pro-Arg-Pro-Gly-Pro tuftsin analog
P21
FGL fibroblast growth loop peptide
From click to delivery
How ordering nootropic works
1. Click Buy
Pick a nootropic vial and click. We hand off to the supplier's secure checkout with our referral applied.
2. Secure checkout
Card payment handled by the supplier's storefront. We don't see or store card details.
3. Ships next day
Orders dispatch within one business day, tracked courier, sealed vial under nitrogen.
4. Arrives in 3–5 days
Delivery to most US addresses in 3–5 business days. Refrigerate on arrival, freeze for long-term.
What each nootropic peptide is for
They map to distinct use cases, not a single 'cognition' bucket:
- Selank / NA-Selank Amidate — anxiolysis without sedation, via GABAergic modulation.
- N-Acetyl Semax Amidate — focus, memory and neurotrophin (BDNF, NGF) support.
- DSIP — sleep architecture, specifically delta-wave sleep.
- PE-22-28 — a TREK-1 channel blocker at the early-research edge.
- P21 — a neurogenesis-focused compound, also shared with the longevity shelf.
Why the N-acetyl amidated versions
Semax and Selank both come in a base form and a modified N-acetyl amidated form, and the modified versions cost more for a concrete reason. N-terminal acetylation and C-terminal amidation each independently protect the peptide from the enzymes that break it down, extending its active window and improving blood-brain-barrier penetration. The price gap tracks that modification, not purity — every vial here is lot-tested to the same spec.
DSIP is a sleep-architecture tool, not a sedative
DSIP (Delta Sleep-Inducing Peptide) is often misread as a sleeping pill. It isn't — it promotes delta-wave (slow-wave) sleep specifically rather than producing general sedation, and at sub-threshold doses it doesn't induce sleep at all. That selectivity is the whole point of buying it over a conventional sleep aid, and it's why it comes in several vial sizes for different protocols.
The research edge: PE-22-28 and P21
PE-22-28 (a spadin-family TREK-1 inhibitor) and P21 are the least-established compounds on the shelf — mechanistically interesting, but with far less human data than Selank or Semax. Buy them knowing they sit at the early-research end, not alongside the compounds with clinical use behind them.
Nootropic peptides — buying & shipping FAQ
What you need to know before ordering nootropic vials.
Semax or N-Acetyl Semax Amidate?
Same compound family, different pharmacokinetics. The N-acetyl amidated form is modified at both ends to resist enzymatic breakdown, giving it a longer active window and better blood-brain-barrier penetration — which is why most current protocols prefer it and why it costs more. The premium is for the modification, not higher purity.
Is DSIP a sleeping pill?
No. DSIP promotes delta-wave (slow-wave) sleep rather than causing sedation, and below a threshold dose it won't put you to sleep at all — it shifts sleep architecture instead of forcing it. That selectivity is the reason to choose it over a conventional GABAergic sleep aid, which broadly suppresses the CNS.
Which of these is best for anxiety versus focus?
Selank (or NA-Selank Amidate) for anxiety — it raises GABAergic tone for anxiolysis without the sedation or tolerance of benzodiazepines. Semax (or the N-acetyl amidated form) for focus, memory and neurotrophin support. They're different mechanisms aimed at different outcomes, so the use case picks the compound.
How established are PE-22-28 and P21?
Less than the rest of the shelf. PE-22-28 is a TREK-1 channel blocker and P21 a neurogenesis compound — both mechanistically interesting but backed mostly by preclinical work, not the clinical use that Selank and Semax carry in their countries of origin. Treat them as the early-research options here.
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