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Anxiolytic peptide

Selank reconstitution.

Selank is most commonly delivered intranasally, but injectable use is also documented. For intranasal use, 5 mg or 10 mg in 2 mL bacteriostatic water gives clean drop counts.

Unit marks on a U-100 insulin syringe — 2 mL bacteriostatic water
Dose5 mg vial10 mg vial
250 mcg10units5units
500 mcg20units10units
750 mcg30units15units

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Selank specifics

What to know about this peptide.

Half-life

Half-life ~30 minutes for plasma; downstream GABAergic effects persist hours. Daily or 2× daily intranasal common.

Stability after mixing

Refrigerate after reconstitution. 28-day stability. Many users administer intranasally rather than subcutaneously.

Typical use

Anxiety, focus, cognitive support. Russian cognitive peptide developed from natural tuftsin sequence.

Not medical advice

The math on this page is correct for the listed vial and BAC-water volume. The decision to reconstitute and inject Selank belongs to you and a clinician who knows your full history — not to a webpage.

Frequently asked

Selank questions

What vial size is Selank usually sold in?

Selank most commonly ships as 5 mg or 10 mg of lyophilized powder. The standard reconstitution is 2 mL of bacteriostatic water, which yields clean unit-mark math on a U-100 insulin syringe for the doses used in most protocols.

How much bacteriostatic water do I add to a Selank vial?

The standard volume is 2 mL of bacteriostatic water. You can use more (easier to draw, lower concentration) or less (more concentrated, smaller draw volume) without changing the peptide itself — only the syringe math changes. The dose table on this page is pre-calculated for 2 mL.

What is the half-life of Selank?

Half-life ~30 minutes for plasma; downstream GABAergic effects persist hours. Daily or 2× daily intranasal common.

How long does reconstituted Selank last in the fridge?

Refrigerate after reconstitution. 28-day stability. Many users administer intranasally rather than subcutaneously.

What is Selank typically used for?

Anxiety, focus, cognitive support. Russian cognitive peptide developed from natural tuftsin sequence.

What syringe should I use for Selank?

U-100 insulin syringes (29–31 gauge, 8–13 mm needle) are standard for subcutaneous peptide injection. Each unit on a U-100 syringe equals 0.01 mL. The dose table above shows how many units to draw for each common dose, given the vial size and standard bacteriostatic water volume.

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