20 mg vial
Semax / Selank: a 20 mg vial
What a 20 mg vial of Semax / Selank becomes once it is mixed, and what each dose reported in the sources draws to on a syringe. Every figure is arithmetic on the vial size in the heading — none of it is a recommendation, and the doses are the ones our sources describe rather than ones we picked.
Leading with
20 mg + 1 mL bacteriostatic water = 20 mg/mL
Chosen because it puts the reported doses on readable marks of a 1 mL U-100 syringe. Other volumes are perfectly valid — the dilution table further down covers them, and the concentration changes what every dose draws to.
What each reported dose draws to
At 20 mg/mL, on a 1 mL U-100 syringe. Every row names the source it came from, and a trial protocol and a community convention are not the same kind of information.
| Goal | Dose | Units | Doses in this vial | Source |
|---|---|---|---|---|
| Commonly described community protocolOnce or twice daily, in courses of 2 to 4 weeks · Nasal | 300 mcg – 600 mcg | 1.5 units – 3 units | 66 | Community practice |
Check every figure against the vial in front of you before drawing. Vials are filled with an overage and labels are not a guarantee. Change any of these numbers in the calculator.
If you add a different amount of water
The same 20 mg of compound, at four common volumes. More water means a larger, easier-to-measure draw of a weaker solution; less water means the opposite. The amount of compound you inject is identical in every row — only the volume carrying it changes.
| Water added | Concentration | 300 mcg draws to |
|---|---|---|
| 1 mLshown above | 20 mg/mL | 1.5 units units · 0.015 mL |
| 2 mL | 10 mg/mL | 3 units units · 0.03 mL |
| 3 mL | 6.667 mg/mL | 4.5 units units · 0.045 mL |
| 5 mL | 4 mg/mL | 7.5 units units · 0.075 mL |
Storage
Before mixing
Refrigerated at 2–8 °C, protected from light.
After mixing
Refrigerated at 2–8 °C and used within about 30 days. A blend cannot be split. A contaminated vial takes every component with it.
Arithmetic on the vial size named above and the doses our sources report. Nothing here is a recommendation, a protocol or medical advice, and no clinician has reviewed it. Some rows describe community practice, which is not evidence that a dose is safe or effective. Speak to a licensed healthcare provider before acting on any of it.
Sources for the doses above are listed in full on the Semax / Selank profile, each with the trial or label it came from.