Peptide Stack

Selank + Semax

Semax Selank stack · nootropic stack · Selank/Semax

Named cognitive pair - Selank (tuftsin analog) plus Semax (ACTH 4–10 analog). Highest-search nootropic blend on vendor menus. We already have the singles and the N-acetyl/amidate/adamantane cousins. This leaf is the two-peptide SKU. No combined trial; each parent has a Russian clinical literature trail that does not automatically apply to a mixed bottle.

Not FDA-approved - research chemical

Quick answer

What it is: Named cognitive pair - Selank (tuftsin analog) plus Semax (ACTH 4–10 analog).

Typical research dose: Selank 250-750 mcg + Semax 200-600 mcg (intranasal; often split AM/PM)

Reconstitution calculator ↓

Research summary, not medical advice.

Reviewed by Kymata Health Editorial Team

·Last updated: August 2026·Evidence: Low

Typical research dose

Selank 250-750 mcg + Semax 200-600 mcg (intranasal; often split AM/PM)

Frequency

1-3× daily (intranasal)

Half-life

~2–3 min each (parents)

Common vials

5 mg / 10 mg

CAS

N/A (blend)

Use-case scores

0–10 against the evidence we have, not a gym ranking. Hidden domains do not apply here.

Cognition3/10
Each parent has a Russian literature trail. The mixed bottle does not inherit both programs.

Compound card

Class: Named nootropic pair (tuftsin analog + ACTH 4–10 analog)
Formula: Selank + Semax (two heptapeptides)
Status: Not FDA-approved · research use

Dose it

10 mg + 5 mL BAC water → 2 mg/mL · advertised cake. Confirm the COA, then use the blend calculator.

Open blend calculator

How it works

Selank (tuftsin analog) and Semax (ACTH 4–10 analog) are sold as a paired nasal SKU. Each has a Russian clinical literature trail. The combination does not have a RCT. Mixing two short peptides in one bottle does not create a third pharmacology.

Dose each component from its own leaf if the vial is actually two peptides lyophilized together - blend math is still two concentrations, not one “nootropic unit.”

Two peptides, two parents

This is a catalog pair. Read Selank and Semax. N-acetyl, amidate, and adamantane cousins are separate IDs.

Research Use Cases

✓Cognitive research pair: Low

Dosing

Phase	Dose	Frequency	Notes
Intranasal pair (vendor)	Selank 250–750 mcg + Semax 200–600 mcg	1–3× daily	Inherited from the singles. No blend trial.

Administration

Route / form

Intranasal

Timing

Often Semax earlier, Selank later in community use - folklore, not a label.

Empty stomach?

No - Food timing is not critical.

Timeline

Minutes–hours

Parents are fast. Blend duration is unmeasured.

Who it is for

Cognitive research pair

Low

High search. Evidence is the two parent files, not this SKU.

Reconstitution

Vial	Water	Concentration	Example dose
10 mg lyophilized	5 mL BAC	2 mg/mL	Usually intranasal. Confirm reconstitution volume for a mixed vial.

Change vial size or water volume? Open the blend calculator.

Safety & Considerations

Research peptides. Nasal irritation. Not a substitute for diagnosed anxiety, ADHD, or stroke care. Do not confuse NASA (Semax analog) with this mix.

Regulatory & Legal Status

FDA Status (US)

Research Only

Named pair of two research/Russian-literature peptides. Not an approved combination

WADA Status (2026)

Not Listed

Not currently on the WADA 2026 Prohibited List. Policies may change - verify before competition.

Classification

Research Chemical

US Compounding: Not eligible / not available

⚠️ This information is for educational purposes only and may not reflect the most current regulatory updates. Always verify with official FDA, WADA, and jurisdiction-specific sources before use.

Limits of current evidence

No combined trial.

Verdict

Selank + Semax is a catalog pairing. Use the singles. NASA/Adamax/Adalank are still other SKUs.

Interactions & Contraindications

Research peptides. Nasal irritation. Not a substitute for diagnosed anxiety, ADHD, or stroke care. Do not confuse NASA (Semax analog) with this mix.

Selank + Semax vs. N-Acetyl Semax Amidate

Canonical comparison: Selank + Semax vs N-Acetyl Semax Amidate

Attribute	Selank + Semax	N-Acetyl Semax Amidate
What it is	Two parent peptides in one SKU	One Semax analog (NASA)
Evidence	Parent Selank + Semax papers, no blend RCT	Parent Semax papers only
Typical route	Intranasal pair	Intranasal analog

Verdict: The stack is two molecules. NASA is one analog of one of them. Do not dose a mixed bottle as if it were NASA.

Frequently Asked Questions

Is this NASA?▼

No. NASA is N-Acetyl Semax Amidate, a single analog. This leaf is unmodified Selank plus unmodified Semax as a pair.

One reconstitution or two?▼

If it is one blended vial, treat total milligrams as the blend mass and dose in mcg of blend - or, better, use the Blend calculator with two lines if you know the ratio.

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