With 2 mL bacteriostatic water
10.0 units
Page last checked
Reconstitution · Selank
Selank dosage calculator
Pick the vial, the water you added and the dose. Get the exact draw in units for the syringe in your hand.
Step 1 of 4
- total mg in the calculation
- mL used in the calculation
- mcg
This vial holds 10,000 mcg in total.
- match the size on the package
U-100 insulin syringe · 1 mL · lines every 2 units · 1 unit = 0.01 mL
Draw to
15.0units
15.0 units on a U-100 insulin syringe · 1 mL · lines every 2 units, which is 0.15 milliliters. The nearest syringe line is 16 units.
10 mg ÷ 3 mL = 3.33 mg/mL
→ 33 mcg/unit · 500 mcg = 0.150 mL = 15.0 units
→ 33 mcg/unit · 500 mcg = 0.150 mL = 15.0 units
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How to use the calculator
- 1
Enter the amount in the vial
- 2
Enter the water you added
- 3
Enter the dose you want to convert
Selank is a peptide seven amino acids long. It is a small immune fragment called tuftsin, with a tail added to slow its breakdown. Sellers market it for anxiety, stress and calm focus.
Russian groups gave it to patients with anxiety disorders and compared it with two older sedatives. Those studies never said how much anyone received. No source gives a human dose. English reviews describe it as well tolerated, but they trace that claim to an experiment in rats.
No completed controlled human trial has shown which dose works for Selank. There is no study-backed human dosing program to publish. Animal quantities are not converted into a human recommendation.
no human dose shown to work
Examples using 10 mg of Selank
Each row uses 10 mg and the liquid volume shown. Dividing the amount by that volume gives the calculated concentration. The rows are arithmetic examples, not alternative product preparations.
◆ How liquid volume changes the resultdose used: 500 mcg
With 3 mL bacteriostatic water
15.0 units
| Bacteriostatic water | Concentration | Per U-100 unit | Draw for 500 mcg | Nearest syringe line |
|---|---|---|---|---|
| 2 mL | 5.00 mg/mL | 50.0 mcg | 10.0 u · 0.100 mL | exactly 10 u |
| 3 mL | 3.33 mg/mL | 33.3 mcg | 15.0 u · 0.150 mL | 16 u · 6.7% off |
The amount, liquid volume and dose shown here are the calculator’s starting example for Selank. Replace them with your own values. Every result in the table is calculated from those inputs.
What the Selank studies tell us—and what is missing
The cited abstracts report anxiety studies but omit the amount given. They describe outcomes that can be read and compared. They do not provide enough detail to set a supported dose or reproduce the treatment.
Read the supporting evidence3 supporting notes
The comparisons were with other anxiety medicines
One study compared Selank with medazepam in people with generalized anxiety and neurasthenia. Researchers tracked symptoms using the Hamilton and Zung scales, plus a clinician’s global rating. They also measured a blood marker linked to the body’s enkephalins. These were outcome measures; they did not define an injection schedule.
The researchers reported similar effects on anxiety, with some other effects differing between the groups. A comparison with an active medicine does not tell us how either group would have done with placebo.
A second report measured symptoms and quality of life
The phenazepam comparison included people with anxiety and somatoform disorders. Its abstract reports reduced anxiety and better quality of life. It also describes an effect lasting after treatment ended. These are the authors’ reported findings in those patients, not proof of the same effects in healthy people or with an injected preparation.
The missing amount remains a limit
Neither abstract states the dose. The amount, route and full method would need to be checked before treating either report as a usable protocol. A sample value in the calculator only shows how mass, concentration and liquid volume relate. A precise syringe reading cannot supply the clinical details missing from a study record.
The comparisons were with other anxiety medicines
One study compared Selank with medazepam in people with generalized anxiety and neurasthenia. Researchers tracked symptoms using the Hamilton and Zung scales, plus a clinician’s global rating. They also measured a blood marker linked to the body’s enkephalins. These were outcome measures; they did not define an injection schedule.
The researchers reported similar effects on anxiety, with some other effects differing between the groups. A comparison with an active medicine does not tell us how either group would have done with placebo.
A second report measured symptoms and quality of life
The phenazepam comparison included people with anxiety and somatoform disorders. Its abstract reports reduced anxiety and better quality of life. It also describes an effect lasting after treatment ended. These are the authors’ reported findings in those patients, not proof of the same effects in healthy people or with an injected preparation.
The missing amount remains a limit
Neither abstract states the dose. The amount, route and full method would need to be checked before treating either report as a usable protocol. A sample value in the calculator only shows how mass, concentration and liquid volume relate. A precise syringe reading cannot supply the clinical details missing from a study record.
Units to dose at 3.33 mg/mL
Mix 10 mg into 3 mL and one U-100 unit carries 33.3 mcg. The table shows how much peptide is in each numbered syringe line. These are conversion examples, not suggested doses.
Open the unit conversion table10 rows
| U-100 line | Volume | Mass (mcg) | Mass (mg) |
|---|---|---|---|
| 10 u | 0.10 mL | 333 mcg | 0.333 mg |
| 20 u | 0.20 mL | 667 mcg | 0.667 mg |
| 30 u | 0.30 mL | 1,000 mcg | 1 mg |
| 40 u | 0.40 mL | 1,333 mcg | 1.333 mg |
| 50 u | 0.50 mL | 1,667 mcg | 1.667 mg |
| 60 u | 0.60 mL | 2,000 mcg | 2 mg |
| 70 u | 0.70 mL | 2,333 mcg | 2.333 mg |
| 80 u | 0.80 mL | 2,667 mcg | 2.667 mg |
| 90 u | 0.90 mL | 3,000 mcg | 3 mg |
| 100 u | 1.00 mL | 3,333 mcg | 3.333 mg |
How the math works
- Concentration — divide the amount entered by the liquid volume used in the calculation: mg ÷ mL = mg/mL. This tells you how many mg are in each mL.
- Volume — the dose divided by that concentration: dose ÷ (mg/mL) = mL.
- Units — on a U-100 syringe one unit is 0.01 mL, so mL × 100 = units. A U-40 unit is 0.025 mL, so the wrong barrel is a 2.5× error. That is why the calculator asks which one you have.
- Rounding gap — the exact draw against the nearest syringe line: |exact − nearest line| ÷ exact × 100 = % difference.
Useful guides for this calculation
The math is only one part of the question. These guides cover the compound, published doses, side effects, mixing steps and supplies.