Selank (Pen)

Description

Selank research pen — Canada

Researched & reviewed by the SPO Quality Team · Last reviewed: 30 September 2026

This listing is Selank in pen format (10mg fill) — the same research material as our Selank vials, supplied in a pre-formatted research pen for laboratories that prefer logged, repeatable handling over loose vials. Selank is a seven-amino-acid synthetic peptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) in which a Pro-Gly-Pro tail has been joined to tuftsin. Laboratory research only; the pen is a handling format, not an instruction.

Full research overview, study table & references → Selank in Canada: research guide

Identity at a glance

Batch documentation: a batch-specific COA for the Selank pen has not been posted yet — see the COA library. Reports for the vial listings, where posted, are on those pages.

What researchers have looked at

• Strain differences in mice (2002): Selank changed open-field behaviour and slowed plasma leu-enkephalin breakdown in BALB/c mice but had neither effect in C57Bl/6 mice^[1].
• Cortical gene expression in rats (2016): an hour after administration, 45 of 84 neurotransmission-related genes in the frontal cortex shifted, and the changes correlated with those produced by GABA^[2].
• Influenza model (2009): in cell culture and in infected mice, Selank reduced replication of an H3N2 strain most clearly when given before inoculation, alongside higher interferon-alpha gene expression^[3].
• Stability: tritium-labelling showed the peptide is cleaved in plasma into TKPRP, TKP, RP and GP, so an experiment may be measuring its fragments as well as the intact molecule^[4].

These are animal and laboratory findings. A US review in 2021 called Selank poorly studied^[5], and nothing here is a statement about effects in people.

Storage and handling

• Follow the label: keep the pen cool, dry and out of light, and do not subject it to repeated freeze–thaw.
• Log the batch number and dates of receipt and first use, as with any research material. No protocol or administration information is provided here.

Vial strength: Selank 10MG. Other pens are on the peptide pens page; the whole range is on our buy peptides online in Canada page. Canada Post from inside Canada (shipping policy).

Frequently asked questions

What is the Selank pen?

The same synthetic Selank supplied in a pre-formatted research pen rather than a loose vial, for laboratories that want repeatable, logged handling. It is a research format only; no administration guidance of any kind is given.

Is there a batch report for the Selank pen?

Not yet. No batch-specific report for the pen is posted in the COA library. The page will state the report when one exists.

How is Selank different from Semax?

They are separate heptapeptides: Selank is Thr-Lys-Pro-Arg-Pro-Gly-Pro and Semax is Met-Glu-His-Phe-Pro-Gly-Pro. Both end in Pro-Gly-Pro, which is why they are often mentioned together (PMID 16637290), but one peptide’s records should never be used for the other.

Is the Selank pen for human use?

No. The pen is supplied for laboratory research only and is not for human or animal use. No dosing, administration or protocol information is provided.

Cited

1. Sokolov et al. (2002), Bulletin of experimental biology and medicine — PMID 12432865
2. Volkova et al. (2016), Frontiers in pharmacology — PMID 26924987
3. Ershov et al. (2009), Voprosy virusologii — PMID 19882898
4. Zolotarev et al. (2006), Bioorganicheskaia khimiia — PMID 16637290
5. Doyno et al. (2021), Journal of clinical pharmacology — PMID 34396551

For laboratory research use only. Not for human or animal consumption. No dosing, administration or protocol information is provided, and nothing here is a claim of efficacy or safety in humans.