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Home / Encyclopedia / Neuro & Cognitive / Semax vs Selank
⚖️ Neuro & Cognitive

Semax vs Selank

How do Semax and Selank compare for Neuro & Cognitive research? Side-by-side evidence, molecular profile, EU legal status and COA-verified supplier prices — never dosing advice.

At a glance

Semax

🧠 Neuro & Cognitive
EVIDENCE BASEStrong
CLASS
ACTH analog (heptapeptide)
MW
833.9 g/mol
ORIGIN
Russia (registered drug)
ADMIN
Intranasal spray / injectable
EU STATUS
Research only
WADA
Prohibited S0
Molecular weight
833.9 g/mol
PRICE FROM
€17.99 · 17 EU vendors
View prices →

Selank

🧠 Neuro & Cognitive
EVIDENCE BASEStrong
CLASS
Tuftsin analog (heptapeptide)
SEQUENCE
TKPRPGP
ORIGIN
Russia (registered drug)
ADMIN
Intranasal spray
EU STATUS
Research only
PRICE FROM
€17.99 · 16 EU vendors
View prices →

Which fits which research target?

Both Semax and Selank sit within Neuro & Cognitive research but are studied for different primary signals. Neither is an approved medicine — compare the evidence, not marketing claims.

PRIMARY RESEARCH SIGNAL
Semax
Neuroprotection / stroke recovery
Selank
Anxiety reduction
Neither Semax nor Selank is an approved medicine. All comparisons here are research observations, not usage, dosing or efficacy recommendations.

What the research shows

Semax

EVIDENCE SUMMARY
STRONG
Neuroprotection / stroke recovery — Approved in Russia for this indication. Published clinical trials showing reduced neurological deficit post-ischaemic stroke.
MODERATE
BDNF upregulation — Consistent finding in animal and some human studies. BDNF increase measured in CSF and blood in human research.
MODERATE
Cognitive enhancement — Improvements in memory and attention measured in clinical studies in patients with cognitive impairment. Healthy volunteer data more limited.

Selank

EVIDENCE SUMMARY
STRONG
Anxiety reduction — Registered drug in Russia for anxiety. Published clinical trials showing anxiolytic effects without sedation or dependence.
MODERATE
Immune modulation — Inherited from tuftsin parent peptide. IL-6 and interferon modulation in animal and some human studies.
MODERATE
Cognitive effects — Memory and learning improvements in stressed rodents. Some human data on attention under stress.

Compare prices across EU suppliers

Compare Semax across EU suppliers

17 EU vendors · COA · from €17.99

View prices →

Compare Selank across EU suppliers

16 EU vendors · COA · from €17.99

View prices →

Frequently asked questions

Is Semax or Selank better?

Neither is an approved medicine, and “better” depends on the research target. Semax is most associated with Neuroprotection / stroke recovery, while Selank is studied for Anxiety reduction. Compare the evidence tiers and COA-verified EU pricing above rather than assuming one is superior. This is not a usage recommendation.

Why compare Semax and Selank?

Both are studied within Neuro & Cognitive research through different mechanisms, so researchers often weigh them against each other. This page sets their evidence, molecular profile, EU legal status and supplier pricing side by side.

Which is cheaper in the EU, Semax or Selank?

Prices vary by supplier, vial size and COA status. Semax is listed from €17.99 across 17 COA-verified EU vendors; Selank from €17.99 across 16. Open the price pages above to compare current listings — nobody pays us for placement.

Read the full guides

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