For research use only. Not for human consumption. Not medical advice — consult a licensed clinician.

Nootropic / Cognitive

Selank

Also known as: Selank (TP-7)

Selank is a synthetic heptapeptide analog of the immunomodulatory tetrapeptide tuftsin. It is registered as a prescription anxiolytic in Russia (0.15% intranasal solution); it is not FDA or EMA approved.

Where to buy · live market data

Who's worth your money for Selank

Every current seller, ranked by independent evidence — Merit Score, latest COA purity, and live $/mg (size-normalized). Prices refresh daily. Rankings are never paid.

Top Merit pick

Highest Merit Score (99) of 41 scored sellers

$2.30/mg

$1380 · 600mg · 99.9% purity

Best value

Lowest $/mg among scored sellers

$1.54/mg

$154 · 100mg · 99.8% purity

Most tested

7 independent COAs on file

$2.87/mg

$28.69 · 10mg · 99.9% purity

7 COAs
Buy Code MERIT · 10% off

Average price

$5.35/mg

Sellers

76

45-day trend

-8.9%

64 of 76 sellers have a current price· 3 stale hidden· 20 unverified hidden

Prices observed from public storefronts (last 24h), normalized to $/mg. "Evidence" is Merit's 0–100 Merit Score, derived only from observable verification evidence (methodology on /about); "Purity" is the latest independent COA. Some buy links are affiliate links — Merit may earn a commission at no extra cost to you, and where a vendor offers one, the code shown gets you a discount at their checkout. Affiliate status never affects price data, ranking, or the Merit Score (full policy on /disclosure). Research use only.

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Compound reference

About Selank

CAS

129954-34-3

Molecular formula

C33H57N11O9

Sequence

TKPRPGP

Typical dose range

250–500 mcg/day subcutaneous (research); 600–2700 mcg/day intranasal (Russian clinical protocols)

Half-life

~2–3 minutes (plasma); downstream effects persist hours to days

Independent evidence

COAs for Selank

146 third-party tests across 40 vendors. Each card links to the full report.

All 146 COAs for Selank →
Measured purity 98.7%–100.0% across 104 COAs
Measured purity over time
✓ Vendor-published
99.77 %
Sep 2026
Freedom Diagnostics Moderate

For

Selank

by Sunrise Bioresearch· batch SLK10SEP25-01

COA on file
Aggregated · 3rd-party listing
99.77 %
Sep 2026
Freedom Diagnostics Moderate

For

Selank

by Sunrise Bioresearch· batch SLK10SEP25-01

Aggregated · 3rd-party listing
99.58 %
Sep 2026
ILS Labs Strong

For

Selank

by NG Peptide· batch slk09

Aggregated · 3rd-party listing
99.16 %
Sep 2026
Janoshik Analytical Limited

For

Selank

by CertaPeptides· batch CP-2608-SEL30

Aggregated · 3rd-party listing
99.52 %
Sep 2026
ILS Labs Strong

For

Selank

by Velora Biolabs· batch VBL-SK10-1

Aggregated · 3rd-party listing
99.78 %
Aug 2026
Freedom Diagnostics Moderate

For

Selank

by Synthesis Peptides· batch SEL30926A

Aggregated · 3rd-party listing
99.83 %
Aug 2026
Freedom Diagnostics Moderate

For

Selank

by Synthesis Peptides· batch SEL10926

Aggregated · 3rd-party listing
99.57 %
Aug 2026
ILS Labs Strong

For

Selank

by Frontier Aminos· batch SLK08

Aggregated · 3rd-party listing
99.68 %
Aug 2026
Freedom Diagnostics Moderate

For

Selank

by Synthesis Peptides· batch SEL30926

Aggregated · 3rd-party listing
99.61 %
Aug 2026
ILS Labs Strong

For

Selank

by Certified Peptides· batch SLK1-001

Aggregated · 3rd-party listing
99.60 %
Aug 2026
Finnrick Analytics

For

Selank

by VoriLabs· batch VoriLabs SELA-2607-B

Aggregated · 3rd-party listing
99.20 %
Aug 2026
Krause Analytical

For

Selank

by VoriLabs· batch VoriLabs SELA-2607-A

Aggregated · 3rd-party listing
99.47 %
Jul 2026
ILS Labs Strong

For

Selank

by jdbioworks· batch 2026-002

Aggregated · 3rd-party listing
99.80 %
Jul 2026
MZ Biolabs Moderate

For

Selank

by Seus Peptides· batch SK5-260701

Aggregated · 3rd-party listing
99.38 %
Jul 2026
ILS Labs Strong

For

Selank

by Artisan Aminos· batch AA-SLK10-049

Aggregated · 3rd-party listing
99.63 %
Jul 2026
ILS Labs Strong

For

Selank

by Ignite Peptides· batch Selank102232

Aggregated · 3rd-party listing
99.56 %
Jul 2026
ILS Labs Strong

For

Selank

by NG Peptide· batch SLK06

Aggregated · 3rd-party listing
99.82 %
Jul 2026
Freedom Diagnostics Moderate

For

Selank

by Peptide Plugs· batch 148-04-DK

✓ Vendor-published
99.41 %
Jun 2026
ILS Laboratories

For

Selank / Semax

by Ion Peptide· batch SKX20-06092026

COA on file
Aggregated · 3rd-party listing
99.67 %
Jun 2026
ILS Labs Strong

For

Selank

by Ion Peptide· batch SK5-06092026

Aggregated · 3rd-party listing
99.22 %
Jun 2026
Horizon Analytical

For

Selank

by Blank Peptides· batch B-9907743-P

✓ Vendor-published
99.89 %
Jun 2026
ILS Laboratories

For

Selank / Semax

by Ion Peptide· batch XASK10-06092026

COA on file
✓ Vendor-published
99.78 %
Jun 2026
ILS Laboratories

For

Selank / Semax

by Ion Peptide· batch SKSX20-06092026

COA on file
✓ Vendor-published
99.69 %
Jun 2026
ILS Laboratories

For

Selank

by Ion Peptide· batch SK5-06092026

COA on file
Research depth

20 citations indexed for Selank

All research on Selank →

review · 2026

Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives

Therapeutic peptides are short chains of amino acids used to treat metabolic and endocrine conditions such as obesity and type 2 diabetes.

review · 2026

Unregulated Peptide Use in the Age of Biohacking: Digital Promotion, Gray-Market Access, and Emerging Public Health Risks

Unregulated peptide use is emerging as a digitally mediated public health concern.

review · 2026

Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions

Therapeutic peptides are emerging as promising adjuncts in the management of orthopaedic injuries, grounded in their ability to modulate molecular signaling networks central to cellular medicine.

review · 2024

Phenibutan—an Illegal Food Supplement With Psychotropic Effects and Health Risks

Background Phenibut (β-phenyl-γ-aminobutyric acid) is an analog of the neurotransmitter gamma-aminobutyric acid (GABA). Like abapentin and pregabalin, it inhibits α2-δ-subunits of voltagedependent presynaptic calcium channels.

rct · 2023

Comparing the Efficacy of tDCS and tRNS to Improve Reading Skills in Children and Adolescents With Dyslexia

The present study grounds on the absence of evidence-based treatment in individuals with developmental dyslexia (DD).

animal · 2022

Selank, a Peptide Analog of Tuftsin, Attenuates Aversive Signs of Morphine Withdrawal in Rats

Activity of a peptide tuftsin analogue Selank was studied in outbred rats using the naloxone-precipitated morphine withdrawal model.