Selank Calculator
Selank reconstitution and dosage reference — calculate vial concentration, BAC water volume, and exact syringe units below.
At the reference preset of a 10mg Selank vial reconstituted with 5 mL of bacteriostatic water, a 0.4mg dose measures 20 units on a U-100 insulin syringe.
Selank is a synthetic heptapeptide developed in Russia, structurally based on tuftsin.
- Concentration
- 2 mg/mL
- Draw volume
- 0.2 mL
- Units (U-100)
- 20
- Doses per vial
- ≈ 25
- Reference preset
- 10mg · 5mL · 0.4mg
Reference values from the default preset — adjust the calculator below for your vial.
How to use this calculator›
- 1. Vial — the peptide amount printed on the vial, in milligrams.
- 2. BAC water — the bacteriostatic water added to the vial. More water means a lower concentration and a larger, easier-to-read draw.
- 3. Dose — the single dose being measured, in milligrams.
- 4. Syringe — the barrel being drawn into. The diagram rescales to that syringe, so the same dose sits at a different mark on a 0.3 mL barrel than on a U-100.
Educational reference only — not medical advice or a dosing recommendation.
What is Selank?
Selank is a synthetic heptapeptide developed in Russia, structurally based on tuftsin. It is studied for anxiolytic and nootropic effects. In Russia it is available as an intranasal spray; subcutaneous injection is also used.
Where researchers source this
Vendors below have been manually vetted for third-party COA practice and shipping reliability. Verify the current Certificate of Analysis on the vendor's product page before purchase.
Ascension PeptidesUSA-based research vendor (Castle Rock, Colorado) publishing a per-batch Certificate of Analysis library with public lot IDs, so a vial can be matched to its own COA before and after purchase. Recent HPLC purity 99.79–99.98% across the catalog. Ships from the US and carries the full GLP-1 reference range alongside repair, longevity and cosmetic compounds.
Buy Selank 10mg →Affiliate link — we may earn a commission at no extra cost to you.

Particle PeptidesEU-based vendor (Slovakia, since 2015) shipping to EU, UK, and Switzerland. The only European supplier publishing all seven test parameters per batch (purity, identity, content, bioburden, endotoxins, heavy metals class 1 & 2). Manufacturer is cGMP / ISO 9001 / ISO 13485 compliant.
Buy Selank 10mg →Affiliate link — we may earn a commission at no extra cost to you.

| 5 mg | lyophilized powder |
| 10 mg | lyophilized powder |
| 0.1 mg | ≈ 5 U-100 units (at 10mg / 5mL) |
| 0.2 mg | ≈ 10 U-100 units (at 10mg / 5mL) |
| 0.4 mg | ≈ 20 U-100 units (at 10mg / 5mL) |
| 0.6 mg | ≈ 30 U-100 units (at 10mg / 5mL) |
How it's typically prepared
Reconstitute with BAC water; refrigerate. Many users prefer intranasal administration.
Frequently asked questions
- Is Selank approved?
- Selank is approved as an anxiolytic in Russia. It is not FDA-approved in the United States.
Other Cognitive peptides
PeptideDose is an educational reference. It is not medical advice and does not replace consultation with a licensed healthcare provider. Doses shown in presets are derived from published protocols and product labels — they are not personal recommendations.
