Studies happened, and none of them printed a quantity
This is not a peptide that was never tried in people. Several groups gave it to patients with anxiety conditions and compared it against two older sedatives in common use.
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Reconstitution · Selank
Selank reconstitution 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
- Vial strengthamount printed on the vial
- Bacteriostatic water addedhow much water you added
- Target doseenter the dose you want to convert
This vial holds 10,000 mcg in total.
- Syringe typematch the label on your syringe
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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Show the math and syringe details
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How to use the calculator
- STEP 1
Enter the amount in the vial
- STEP 2
Enter the water you added
- STEP 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 a 10 mg Selank vial
Each row starts with the same 10 mg vial and changes only the amount of water. More water makes the mixture less concentrated, so the same dose uses more syringe units.
◆ How the water amount changes the resultdose used: 500 mcg
| Water added | 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 vial, water 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.
There is no published number to put in this box
No published human dose exists for this compound. The calculator therefore demonstrates arithmetic only and does not preload a dose as if one had been established.
Why there is no mixing guide
A mixing guide needs a documented vial strength and human dose. Neither is available here, so there is no safe worked example to publish.
The opening setting is arbitrary and says so
The field has to contain something before a reader types. On this page whatever it contains is a placeholder and nothing more.
Where the confident numbers online come from
Search this peptide and confident figures appear immediately, alongside a reassuring account of how it feels and what it does not do.
What the studies do settle, even without a quantity
An absent amount is not the same as an absent result, and it would be lazy to treat this page as empty.
How to read the table anyway
The arithmetic still answers a real question, as long as the question is the right one. Given a mass you have decided on, it tells you what volume to add and where the plunger lands.
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.
| 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 in the vial by the water you added: 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.