Semax Calculator
Dosage and reconstitution math for Semax. A synthetic heptapeptide derived from a modified ACTH 4-10 fragment, studied for neurotropic signaling without classical adrenocortical activity.
Reconstitution calculator
Pre-filled with common defaults for Semax. Adjust any field to match your own vial.
Show the math
Enter values above to see the step-by-step math.
Free Illustrated Reconstitution Guide (PDF)
8-step visual walkthrough with photos and tips — from gathering supplies to drawing your dose. Educational only — not medical advice.
Semax dosage calculator
The Semax dosage calculator above converts a target dose into exact syringe units based on your vial size and how much bacteriostatic water you used to reconstitute it. Semax is commonly sold in 5 mg, 10 mg, 30 mg vials. The calculator supports both U-100 and U-40 insulin syringes and flags draws that are too large for the syringe barrel or too small to measure accurately. A synthetic heptapeptide derived from a modified ACTH 4-10 fragment, studied for neurotropic signaling without classical adrenocortical activity. Enter your target dose in the calculator above to see the exact number of units to draw.
Semax dosage chart
| Sample dose | Concentration | Volume to draw | Units on U-100 |
|---|---|---|---|
| 250 mcg | 3.33333 mg/mL | 0.075 mL | 7.5 |
| 500 mcg | 3.33333 mg/mL | 0.15 mL | 15 |
| 1000 mcg | 3.33333 mg/mL | 0.3 mL | 30 |
| 2000 mcg | 3.33333 mg/mL | 0.6 mL | 60 |
| 4000 mcg | 3.33333 mg/mL | 1.2 mL | 120 |
Semax and ACTH analog peptides
Semax is a Synthetic ACTH (4-10) fragment analog. A synthetic heptapeptide derived from a modified ACTH 4-10 fragment, studied for neurotropic signaling without classical adrenocortical activity.
See all ACTH analog peptides →
How to reconstitute Semax
Reconstituting Semax is the same unit-conversion process used for any lyophilized peptide:
- Draw your chosen volume of bacteriostatic water into a syringe.
- Inject the bacteriostatic water slowly down the side of the Semax vial — do not shoot it directly onto the powder.
- Swirl gently until the powder fully dissolves. Do not shake.
- Store the reconstituted vial refrigerated.
- To dose, calculate your draw volume: divide your target dose by the concentration (vial mg ÷ water mL = mg/mL). The calculator above does this automatically.
For Semax specifically, 5 mg, 10 mg, 30 mg vials are common. A typical reconstitution adds 2 mL of bacteriostatic water, producing a concentration of 5 mg/mL for the 10 mg vial size.
Semax half-life and storage
Published work reports a short plasma half-life for unmodified Semax, though downstream neurochemical effects measured in research have been reported to extend beyond the circulating half-life.
Lyophilized Semax is typically stored refrigerated. Reconstituted solutions are commonly refrigerated and protected from light.
Common Semax dosing mistakes
- Confusing mg and mcg. 1 mg = 1,000 mcg. Always convert to the same unit before computing the draw.
- Using a U-40 syringe with U-100 math. Same printed mark, 2.5× the physical volume. Always check the syringe label.
- Not labeling the vial. Write the reconstitution date and concentration on the vial the moment you mix it.
- Under-diluting. If your draw is less than about 1 unit, the volume is too small to read accurately — add more bacteriostatic water next time.
Semax stacks
Semax is one of the ingredients in what is commonly referred to as the Nootropic stack . These are terms used in online peptide communities to describe specific combinations. See the stack pages for the full composition and calculator links.