Use this calculator for Selank reconstitution and dosage maths. Selank is supplied in pen, vial, and nasal-spray formats — the calculator handles pen and vial mode. Nasal spray dosing is per-spray and depends on the specific nasal product’s per-spray volume.
For research and educational purposes only. This calculator performs volumetric mathematics on the values you enter; it does not recommend doses or provide medical advice.
Universal peptide & nootropic dose calculator
Standard research pen format: 3 mL total volume, 300 clicks per pen. That’s fixed — so the only thing that changes is how many mg are in your specific pen. mg per click = your pen’s mg ÷ 300.
Vial mode: for lyophilised powder vials you reconstitute yourself with bacteriostatic water. Tell us the vial mg, how much BAC water you added, and your target dose — we work out the exact volume to draw on a U-100 insulin syringe.
Research and educational purposes only. Not medical advice. Not for human consumption. This calculator performs volumetric mathematics on the values you enter; it does not recommend doses. Compounds listed are not licensed as medicines for human use unless stated otherwise.
About Selank
Selank is a synthetic heptapeptide (seven amino acids) derived from a natural anxiolytic peptide. It was developed by Russian research institutes and is supplied as a research-grade compound for laboratory study. Selank is unscheduled under the UK Misuse of Drugs Act 1971 and is not licensed as a medicine in the UK.
Published research literature has examined Selank in anxiolytic, cognitive, and neuroimmune contexts. Subcutaneous and intranasal research administration are both commonly described.
Typical reconstitution / pen formats
| Format | BAC water | Concentration / mg per click | Volume to draw / clicks | For |
|---|---|---|---|---|
| 5mg vial | 2 mL BAC water | 2.5 mg/mL | 0.10 mL (10 units U-100) | for a 250mcg administration |
| 10mg vial | 2 mL BAC water | 5.0 mg/mL | 0.05 mL (5 units U-100) | for a 250mcg administration |
| 30mg vial | 3 mL BAC water | 10.0 mg/mL | 0.025 mL (2.5 units U-100) | for a 250mcg administration |
Selank dosing observed in research literature
Reported research-literature dose ranges for Selank in subcutaneous and intranasal administration fall predominantly in the 100–500mcg range per administration, with daily or twice-daily administration most commonly described.
These figures are reported here for completeness of the research-literature picture and do not constitute a dosage recommendation.
Half-life and frequency
Selank has a short serum half-life, supporting the daily or multi-daily research-administration pattern most commonly described in published literature.
Storage and shelf life
Lyophilised Selank powder is stable refrigerated. Reconstituted with bacteriostatic water it is typically stable for approximately 28 days refrigerated.
Frequently asked questions
How much bacteriostatic water do I add to a 10mg Selank vial?
A typical research-protocol choice is 2 mL of bacteriostatic water for a 10mg vial, giving 5 mg/mL. This produces a 5-unit draw on a U-100 insulin syringe for a 250mcg target administration.
Can Selank be administered nasally?
Intranasal administration of Selank is widely described in published research literature. Nasal preparations are typically supplied as ready-to-use sprays at known per-spray volumes.
How long does Selank last after reconstitution?
Approximately 28 days refrigerated with bacteriostatic water; 24–48 hours with sterile water.
Is Selank legal in the UK?
Selank is unscheduled under the Misuse of Drugs Act 1971 and is supplied as a research-grade compound. It is not licensed as a medicine in the UK.
What is the difference between Selank and Semax?
Both are short synthetic peptides developed for cognitive and neuroimmune research. They have different amino-acid sequences and different research profiles. See our Semax page for that compound.
Related compounds and stacks
Where to source research-grade Selank
For UK readers researching Selank, our partner supplier stocks research-grade preparations. (Partner link to be added after the affiliate arrangement is signed.) We do not sell peptides ourselves and are not responsible for any third-party supplier’s product quality, regulatory compliance, or customer service.
Compliance: Stackcalc.co.uk provides calculator tools and information for research and educational purposes only. We do not sell, supply, or recommend peptides, nootropics, or any other compounds. Content on this site does not constitute medical advice. Always consult a qualified healthcare professional. Not for human consumption.