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RU-registered · public clinical useCommunity · convergenceNo approved clinical use

Cognitive Enhancement

Stack: Semax + Selank + Dihexa · cognition / mood
"The one stack here with real population exposure — Semax and Selank are registered medicines in Russia, used by millions. Dihexa, bolted on, has no human data at all."
GoalCognition / mood
Compounds3 · Semax + Selank + Dihexa
Humans exposed (est.)High (Semax/Selank, Russia)
StatusRussia: Semax & Selank are registered medicines (public clinical use since the 1990s) · MHRA (UK)/FDA (US): not approved · Dihexa research-only
In this stack — snapshot; tap through for the full molecule file
Provenance & evidence layers — of the combination, not the parts
RU-registered
Where / who
Community / athlete and clinic use as tagged above.
Use status
Semax/Selank: millions exposed via Russian clinical use.
Evidence it adds
Popularity / convention — not efficacy.
Basis: real-world uptake & convention — not trial data
No approved clinical use
Clinical record
No country lists this exact combination as an approved therapy.
Human trials
No completed human trial of the combination. Russian clinical data for Semax/Selank; none for Dihexa.
Basis required for a clinical-use tag: none found — absence shown, not hidden
Regulatory — read carefully
FDA (US)
Semax / Selank are not approved in the US or UK.
MHRA (UK)
Not licensed in the UK — sold as research material.
What it means
Russian registration is real public-use evidence, but is not MHRA/FDA approval.
Why it matters
Western pharmacovigilance does not cover them; Dihexa has no human safety data at all.
Basis: Russian state register (Semax, Selank) — public clinical use since the 1990s
Why this combination

Semax and Selank are Russian-registered neuropeptides with decades of public clinical use and moderate trial support. Dihexa is the outlier — potent preclinically, no human data. The pairing's free information is strong; the actionable depth is gated.

Members only · the actionable depth
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Doses, cycle structure and what to monitor are part of membership. The provenance, evidence and exposure above are always free.
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Cycle shape — how it's typically structured, not a schedule to follow
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build up
Maintenance
hold / taper
Off
stop / reassess
Convention from community use, not a prescription.
What's worth monitoring

With limited or no human safety data for this combination, there is no established marker set to monitor against — which is a reason for more caution, not less. Baseline bloods and a clinician conversation matter here. General information, not medical advice.

Combination evidence
Real-world uptake High

Semax/Selank: millions exposed via Russian clinical use.

Human efficacy Moderate

Russian clinical data for Semax/Selank; none for Dihexa.

The honest ceiling

Genuine population exposure for two of three — the honest exception on this site.

Fast facts
Compounds

Semax · Selank · Dihexa

Humans exposed (est.)

High (Semax/Selank, Russia).

UK strip

GREEN — research material