Selank arrived fast and the powder was in perfect nick. Nice to see an Australian shop with actual published testing instead of just claiming 99% purity and hoping you don't ask.

- HPLC tested
- 99%+ purity
- COA on file · Janoshik
Free shipping over $100 · same-day dispatch before 12pm AEST · Australia only.
Supplied strictly for in-vitro / laboratory research use only. Not for human or animal consumption. You confirm you are 18+ and purchasing for research purposes.
Product details
Selank Australia. Selank is the calming half of the nootropic pair. The research reports lower anxiety and blunted stress responses in the standard behavioural models, along with better mood and sleep. The comparison running through the literature is against benzodiazepines: the work reports a similar calming effect without the sedation, cognitive dulling or dependence, and several studies measure memory and learning alongside anxiety for exactly that reason. A separate strand covers immune and inflammatory markers.
How it does it. Selank is Semax's sibling, a peptide of seven amino acids built the same way, from a natural immune fragment called tuftsin with the same three amino acid tail added to keep enzymes from breaking it down. It works along two lines. Like Semax it raises BDNF, the protein neurons use to grow and adapt. It also changes the expression of genes in the GABA system, the brain's main calming network. That second mechanism is what separates the pair.
The vial. Independently HPLC-tested by Janoshik, with the certificate of analysis published on this page and in the lab-reports library, carrying the measured number and a verifiable Janoshik key. Supplied in 10 mg freeze-dried vials, dispatched from Australia, AUD pricing. Supplied strictly for in-vitro and laboratory research use only. Not for human or animal consumption, not a therapeutic good, not TGA-approved.
- Form
- Lyophilised powder
- CAS number
- 129954-34-3
- Molecular formula
- C33H57N11O9
- Molecular weight
- 751.9 g/mol
- Sequence
- TKPRPGP
- Purity
- ≥ 99% (HPLC)
- Testing
- Janoshik — independent HPLC
- Storage
- Lyophilised −20°C; reconstituted 2–8°C
- Origin
- Dispatched AU-domestic, Australia-wide
- Use
- In-vitro / laboratory research only
Selank (CAS 129954-34-3; molecular formula C33H57N11O9, average molecular weight ≈ 752 g/mol; sequence TKPRPGP) is a synthetic heptapeptide derived from the immune-research tetrapeptide tuftsin (Thr-Lys-Pro-Arg), extended at the C-terminus with a Pro-Gly-Pro stabilising motif. It is referenced as the leading anxiolytic nootropic research peptide — distinct from the pro-cognitive Semax in the same nootropic-pair framing.
Its neurotrophic activity was reported by Inozemtseva and colleagues (Doklady Biological Sciences, 2008), who found intranasal Selank raises hippocampal BDNF (brain-derived neurotrophic factor) mRNA and protein in research models — indicating local neurotrophin induction.
Its GABAergic mechanism was characterised by Volkova and colleagues (Frontiers in Pharmacology, 2016), who reported that Selank alters the expression of genes involved in GABAergic neurotransmission — a molecular basis for the anxiolytic-pathway research the compound is referenced in.
Selank is most frequently studied alongside Semax — the two form the canonical "nootropic pair" in research literature, Selank framed as the anxiolytic / GABAergic partner and Semax as the pro-cognitive partner. See the Semax product page for the pro-cognitive partner.
The information provided here is a research-reference summary only. Elite AU Peptides makes no medical, therapeutic, anxiolytic, nootropic, or human-use claim about this product. Selank is not TGA-approved, is not a therapeutic good, and is supplied strictly for in-vitro and laboratory research use only. Researchers should consult the primary peer-reviewed literature for pathway data and protocol-specific reference values.
Reconstitute the lyophilised Selank vial with bacteriostatic water for laboratory handling. Add the diluent slowly down the vial wall and swirl gently rather than shaking. The required volume depends on the protocol’s downstream assay requirements — a 10 mg vial reconstituted in 5 mL of bacteriostatic water yields a 2 mg/mL working stock. Adjust per protocol.
Store the lyophilised powder at −20°C, desiccated and protected from light; once reconstituted, store refrigerated at 2–8°C and use within the documented research window, or aliquot and freeze to avoid repeated freeze-thaw cycles. Tamper-evident packaging; the batch label is the canonical reference for the certificate of analysis published in the lab-reports library.
Australia only. Free shipping over $100. Orders placed before 12pm AEST are dispatched the same business day from Australia.
30-day returns on unused product in original packaging, with prior approval.
- What is Selank?
- Selank is a synthetic heptapeptide — Thr-Lys-Pro-Arg-Pro-Gly-Pro — a stabilised analogue of the immune-research tetrapeptide tuftsin, referenced across anxiolytic, GABAergic-modulation and neuropeptide research literature. The leading anxiolytic nootropic peptide in research literature. Supplied strictly for in-vitro and laboratory research use only.
- How does Selank pair with Semax?
- Selank and Semax are the canonical "nootropic pair" in research literature — Selank framed as the anxiolytic / GABAergic partner and Semax as the pro-cognitive partner. They are most frequently referenced together in nootropic research; see the Semax product page for the partner compound.
- Is Selank TGA-approved in Australia?
- No. Selank is not TGA-approved and is not a therapeutic good. We supply it strictly for in-vitro laboratory research use only and make no medical, anxiolytic, nootropic, or human-use claim about this product.
- Is this product third-party tested?
- Yes. Every batch is independently HPLC-tested by Janoshik, and the certificate of analysis is published on the lab-reports page.
- How should it be stored?
- Store the lyophilised powder at −20°C. Once reconstituted, keep it refrigerated at 2–8°C and use within the documented research window.
- How is it shipped?
- Dispatched AU-domestic from Australia. Free shipping over $100; orders placed before 12pm AEST are dispatched the same business day.
- What does 'research use only' mean?
- All products are supplied for in-vitro / laboratory research use only. They are not for human or animal consumption, are not therapeutic goods, and are not TGA-approved.
[ Further reading ]
Selank in Australia: an anxiolytic nootropic research guideWhat Selank is — a stabilised tuftsin analogue referenced across anxiolytic and GABAergic-modulation research — how it pairs with Semax, and how research-grade material is HPLC-verified. A laboratory research reference for Australian researchers.
[ Certificate of analysis ]
Independently verified
Certificate of Analysis
- Lab
- Janoshik
- Batch / lot
- —
- Tested
- —
- Purity
- ≥ 99%
— The batch certificate and downloadable scan for Selank are published on the lab-reports page and confirmed at catalogue load.
Janoshik · HPLC
≥ 99%
brand standard · independently verified
[ Customer reviews ]
What researchers say about Selank
5.0
Average rating 5 out of 5, from 1 review
- 5 star
- 1
- 4 star
- 0
- 3 star
- 0
- 2 star
- 0
- 1 star
- 0
- Shipping speed
- 5.0/5
- Would recommend
- 100%
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Elite AU Peptides supplies research peptides and related compounds for laboratory and in-vitro research use only. Products are not therapeutic goods, are not TGA-approved, and are not for human or animal consumption. Nothing on this site constitutes medical advice or a therapeutic claim. Purchasers must be 18 years or older and are responsible for complying with all applicable laws in their jurisdiction.


